Added CHANGELOG.md, updated README.md. (#74)

Bumped version to 0.7.2.

Fixes #68.
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..b0b1f50
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,138 @@
+## 0.7.2 - 2017-06-12
+
+* Added CHANGELOG.md
+
+## 0.7.1 - 2017-06-12
+
+* Enable executable for `pub global` usage. Protoc plugin can now be installed by running `pub global activate protoc_plugin`.
+* Ensure generated extension class names don't conflict with message class names.
+* `Function` will soon be a reserved keyword, so don't generate classes with that name.
+* Strong mode tweaks and lint fixes.
+
+## 0.7.0 - Not released
+
+* Change how to customize the Dart name of a field to using a `dart_name` option.
+* Implemented support for adding external mixins to generate Dart protos.
+
+## 0.6.0+1 - Not released
+
+* Fix missing import when an extension uses an enum in the same .proto file.
+
+## 0.6.0 - Not released
+
+* Move protobuf enums to a separate .pbenum.dart file.
+* Move server-side stubs to .pbserver.dart.
+
+## 0.5.2 - Not released
+
+* Generate separate .pbjson.dart files for constants.
+
+## 0.5.1 - 2016-04-12
+
+### Strong mode and Bazel
+
+* Fixed all analyzer diagnostics in strong mode.
+* Added experimental support for Bazel.
+
+## 0.5.0 - 2015-10-02
+
+### Performance improvements
+
+This release requires 0.5.0 of the protobuf library.
+
+* significantly improved performance for getters, setters, and hazzers
+* Each enum type now has a $json constant that contains its metadata.
+
+## 0.4.1 - 2015-08-22
+
+### Fixed imports, $checkItem, $json
+
+* Fixed all warnings, including in generated code.
+* Started generating $checkItem function for verifying the values of repeated fields
+* Fixed service stubs to work when a message is in a different package
+* Started generating JSON constants to get the original descriptor data for services
+
+## 0.4.0 - 2015-07-16
+
+### Getters for message fields changed
+
+This release changes how getters work for message fields, to detect a common mistake.
+
+Previously, the protobuf API didn't report any error for an incorrect usage of setters. For example, if field "foo" is a message field of type Foo, this code would silently have no effect:
+
+var msg = new SomeMessage();
+msg.foo.bar = 123;
+This is because "msg.foo" would call "new Foo()" and return it without saving it.
+
+The example can be fixed like this:
+
+var msg = new SomeMessage();
+msg.foo = new Foo();
+msg.foo.bar = 123;
+Or equivalently:
+
+var msg = new SomeMessage()
+   ..foo = (new Foo()..bar = 123);
+Starting in 0.4.0, the default value of "msg.foo" is an immutable instance of Foo. You can read
+the default value of a field the same as before, but writes will throw UnsupportedError.
+
+## 0.3.11 - 2015-07-08
+
+* Fixes issues with reserved names
+
+## 0.3.10 - 2015-07-06
+
+* Adds support for generating stubs from service definitions.
+
+## 0.3.9 - 2015-06-24
+
+* Modify dart_options support so that it supports alternate mixins.
+* Move the experimental map implementation to PbMapMixin
+
+For now, new mixins can only be added using a patch:
+
+* add the new class to the protobuf library
+* add the class to the list in mixin.dart.
+
+## 0.3.8 - 2015-06-16
+
+### Added option for experimental map API
+
+* Changed the Map API so that operator [] and operator []= support dotted keys such as "foo.bar".
+
+This new API is subject to change without notice, but if you want to try it out anyway, see the unit test.
+
+## 0.3.7 - Unreleased
+
+### Added option for experimental map API
+
+* Added an option to have GeneratedMessage subclasses implement Map.
+
+## 0.3.6 - 2016-04-22
+
+### Added writeToJsonMap and mergeFromJsonMap to reservedNames
+
+The 0.3.6 version of the dart-protobuf library added two new functions, so this release changes the protobuf compiler to avoid using them.
+
+## 0.3.5 - 2015-03-31
+
+Protobuf changes for smaller dart2js code, Int64 fixes
+
+This change is paired with https://chromiumcodereview.appspot.com/814213003
+
+Reduces code size for one app by 0.9%
+
+1. Allow constants for the default value to avoid many trivial closures.
+2. Generate and use static M.create() and M.createRepeated() methods on message classes M to ensure there is a shared copy of these closures rather than one copy per use.
+3. Parse Int64 values rather than generate from 'int' to ensure no truncation errors in JavaScript.
+
+## 0.3.4 - 2015-03-31
+
+Parameterize uri resolution and parsing of options, use package:path.
+
+This helps make the compiler more configurable
+to embed it in other systems (like pub transformers)
+
+## 0.3.3 - 2015-03-31
+
+Update the version number
diff --git a/README.md b/README.md
index f9fcd67..0b82e60 100644
--- a/README.md
+++ b/README.md
@@ -28,23 +28,21 @@
 *Note:* currently the workflow is POSIX-oriented.
 
 To build standalone `protoc` plugin:
-- run `pub install` to install all dependecies
-- run `make build-plugin`. That will create a file `out/protoc-gen-dart` which
-  is a plugin
-- Now you can use it either by adding into `PATH` or passing directly with
-  `protoc`'s `--plugin` option.
+- run `pub install` to install all dependencies
+- Now you can use the plugin either by adding the `bin` directory to your `PATH`,
+  or passing it directly with `protoc`'s `--plugin` option.
 
 Please, remember that the plugin is pure Dart script and requires the presence
 of `dart` executable in your `PATH`.
 
-When both the `dart` executable and `out/protoc-gen-dart` are in the
+When both the `dart` executable and `bin/protoc-gen-dart` are in the
 `PATH` the protocol buffer compiler can be invoked to generate like this:
 
     $ protoc --dart_out=. test.proto
 
 ### Optionally using `pub global`
 
-    $ pub global activate -sgit https://github.com/dart-lang/dart-protoc-plugin
+    $ pub global activate protoc_plugin
 
 And then add `.pub-cache/bin` in your home dir to your `PATH` if you haven't already.
 
@@ -112,27 +110,6 @@
 
 Remember to run the tests. That is as easy as `make run-tests`.
 
-The default way of running the Dart protoc plugin is through the
-generated `out/protoc-gen-dart` script. However when run this way the
-Dart code is assembled into one large Dart file using dart2dart. To
-run with the actual source in the repository create an executable
-script called `protoc-gen-dart` with the following content:
-
-    #! /bin/bash
-    dart bin/protoc_plugin.dart
-
-When running protoc just ensure that this script is first when PATH is
-searched. If the script is in the current directory run `protoc` like
-this:
-
-    $ PATH=.:$PATH protoc --dart_out=. test.proto
-
-It is also possible to call the script something else than
-`protoc-gen-dart` and then refer directly to it using the `--plugin`
-option. If the script is called `dart-plugin` run `protoc` like this:
-
-    $ protoc --plugin=protoc-gen-dart=./plugin --dart_out=. test.proto
-
 Useful references
 -----------------
 
diff --git a/pubspec.yaml b/pubspec.yaml
index cb26a4e..b962b21 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: protoc_plugin
-version: 0.7.1
+version: 0.7.2
 author: Dart Team <misc@dartlang.org>
 description: Protoc compiler plugin to generate Dart code
 homepage: https://github.com/dart-lang/dart-protoc-plugin