- added string() method instead of needinf Stringize
- added channel message request / result
Merge branch '20130408-javascript' of github.com:openpeer/opios into 20130408-javascript

# By Sergej Jovanovic
# Via Sergej Jovanovic
* '20130408-javascript' of github.com:openpeer/opios:
  Fixed core data bugs. Updated build script to add model core data file in framework bundle.