Initial work on Chrome GCM Support
Update README.md
More code to spec, starting to add tests
Merge branch 'master' into gcm-chrome

# By Redth (22) and others
# Via Redth (5) and Jon (1)
* master: (25 commits)
  Fixes #186
  Added some xml documentation to GCM Registration ID's.  Close #193
  Switched to ToLowerInvariant(), closes #192
  Bumped nuget version for a beta release
  Update README.md
  Cleaned up ADM, now working by some preliminary tests :)
  Blackberry test to BIS works...
  Fixed header content type, added additional header type for xml
  Refactoring, and using PAP
  Fix documentation of DelayWhileIdle #194
  Converted to HttpClient
  End Rename nightmare
  Rename nightmare
  More rename refactoring
  Change BIS to Bis
  Revert "Temp Remove"
  Temp Remove
  Changing BIS to Bis
  Revert "Old dir name"
  Old dir name
  ...

Conflicts:
	README.md
Fixed some fallout from merging master
more work on chrome GCM
Merge branch 'master' into gcm-chrome

# By Robb
# Via Jon (1) and Robb (1)
* master:
  Server certificate validation for APNS and GCM
Added Chrome GCM Sample Client app
Changes to GCM Chrome sample app, and Chrome GCM code should now be working!