Merge pull request firebase#32 from firebase/jw-1-1-3-changelog

Added change log for upcoming 1.1.3 release

Added ready event bug fix to changelog

Merge pull request firebase#15 from firebase/mtse-new-release

Updated podspec and changelog.txt for v1.1.1 release

Merge pull request firebase#10 from firebase/jw-readme

Added upgrade instructions to README

updated framework