Fixed RTMP crash, minor edits to score submit, re-export of all the changes over the last few weeks

Added a few checks for RTMP on iOS to avoid most crashes, made some minor edits to avoid submitting scores, and created a new build incorporting most of our recent changes.
Merge branch 'master' of https://github.com/playgameservices/play-games-plugin-for-unity into iosfixes4
Tab/whitespace fixes
Merge pull request #224 from playgameservices/iosfixes4

New Build, RTMP crash fix, minor score submit edits