pkg: analysis aided cleanup

Removed a lot of warnings and hints when opening many pkg projects in the editor

R=gram@google.com

Review URL: https://codereview.chromium.org//22284003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/path@25831 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index 35047ac..a366122 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,8 +1,10 @@
 name: path
-author: "Dart Team <misc@dartlang.org>"
-homepage: http://www.dartlang.org
-documentation: http://api.dartlang.org/docs/pkg/path
+author: Dart Team <misc@dartlang.org>
 description: >
  A string-based path manipulation library. All of the path operations you know
  and love, with solid support on both Windows and POSIX (Linux and Mac OS X)
  machines.
+homepage: http://www.dartlang.org
+documentation: http://api.dartlang.org/docs/pkg/path
+dev_dependencies:
+  unittest: any