Merge pull request #784 from jaypoulz/hamster

Added getInstance
Added an API to data walk, default values in constants
Merge remote-tracking branch 'upstream/master' into goat
Added UIPickerView for recording interval, completely implemented
Merge pull request #785 from stowellm/goat

UIPickerView for rec interval, API added, iSENSE constants
Obtain location even if device is rotated, new GPS lock icon
Implemented name text field
Added enter project number dialog, unimplemented
Merge pull request #786 from stowellm/goat

Obtain location on any orientation, gps lock icon change, name text field, enter proj num dialog
Updated SoR app so that it can push to rSENSE.

Updated iOS API so that singleton is ready for some testing!
Merge remote-tracking branch 'upstream/master' into hamster