Merge pull request #75 from burstly/dev

Dev
Updated iOS 2.1 release notes
Updated iOS 2.1 release notes
Merge pull request #76 from burstly/2.1

Updated iOS 2.1 release notes
Updated version number from 2.1.0.42341 to 2.1.0.42421
Updated the the 2.1 version number
Merge branch 'master' of https://github.com/burstly/burstly-integration-docs