add change log information for beta 2. add regex rules for allowing numbers after semver tags (#151)

Author: wangjoshuah

.travis.yml

@@ -21,4 +21,4 @@ cache:
 branches:
   only:
   - master
-  - /^\d+\.\d+\.\d+(-SNAPSHOT|-alpha|-beta)?$/ # trigger builds on tags which are semantically versioned to ship the SDK.
+  - /^\d+\.\d+\.\d+(-SNAPSHOT|-alpha|-beta)?\d*$/ # trigger builds on tags which are semantically versioned to ship the SDK.

CHANGELOG.md

@@ -1,4 +1,13 @@
 # Optimizely Java X SDK Changelog
+
+## 2.0.0 Beta 2
+October 5, 2017
+
+This release is a second beta release supporting feature flags and rollouts. It includes all the same new features and breaking changes as the last beta release.
+
+### Bug Fixes
+Fall back to default feature variable value when there is no variable usage in the variation a user is bucketed into. For more information see [PR #149](https://github.com/optimizely/java-sdk/pull/149).
+
 ## 2.0.0 Beta
 September 29, 2017