Merge pull request #99 from tvolkert/deps

Add path dependency.
diff --git a/pubspec.yaml b/pubspec.yaml
index 80fad18..e061291 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,6 +11,9 @@
 environment:
   sdk: '>=1.19.0 <2.0.0'
 
+dependencies:
+  path: ^1.4.0
+
 dev_dependencies:
   browser: ^0.10.0
   grinder: ^0.8.0