Add travis-ci support
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..61ef6f5
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,25 @@
+language: dart
+sudo: false
+dart:
+  - stable
+  - dev
+dart_task:
+  - test: -p vm
+    xvfb: false
+  - test: -p firefox
+  - test: -p dartium
+    install_dartium: true
+  - dartanalyzer
+
+matrix:
+  include:
+  - dart: stable
+    dart_task: dartfmt
+
+# Only building master means that we don't run two builds for each pull request.
+branches:
+  only: [master]
+
+cache:
+  directories:
+    - $HOME/.pub-cache