Updates version in readme.

Author: rharter

README.md

@@ -39,7 +39,7 @@ This wouldn't be quite complete without some added features.
 Add a Gradle dependency:
 
 ```groovy
-apt 'com.ryanharter.auto.value:auto-value-gson:0.1-SNAPSHOT'
+apt 'com.ryanharter.auto.value:auto-value-gson:0.2-SNAPSHOT'
 ```
 
 (Using the [android-apt](https://bitbucket.org/hvisser/android-apt) plugin)