Merge pull request #49 from burstly/dev

Merge dev to master for setLogLevel patch
Added link to custom decorator sample for android
Merge pull request #50 from burstly/dev

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

Update display interstitial code
Updated iOS Burstly Admin share link
Merge pull request #52 from burstly/iOS-1.40

iOS 1.40
Updated android release notes for 1.23
Merge pull request #53 from burstly/Android-1.23

Android 1.23
Merge branch 'dev' of github.com:burstly/burstly-integration-docs into dev
Release notes updates for 1.40 patch to update InMobi and AdMob.