Merge pull request #49 from burstly/dev

Merge dev to master for setLogLevel patch
Merge pull request #50 from burstly/dev

Added link to custom decorator sample for android
Merge pull request #51 from burstly/dev

Update display interstitial code
Updated android release notes for 1.23
Merge pull request #53 from burstly/Android-1.23

Android 1.23