Don't pass null json values to ADN
Always use JSON encoding for parameters
Send annotations along with posts
Get geolocation annotations working
Fix another Mantle upgrade problem
Remove ADNAnnotationCollection for a simpler model

Instead let value transformers do the heavy lifting
Add some methods for getting posts
added updating files
add personalized and unified stream methods
Updated to Mantle 1.0
Merge pull request #17 from westfeld/extending_file_api

Implemented updateFile:...
ADNFile fixes
Post and annotation improvements from Ben Cochran and Rob Brambley