More robust api url
Add rules
Seet up rules syncing and hook into SurveyFragment.  Still need to destroy an unsuccessful survey upon rules failure
Fix merge conflict
Get rid of unneccessary log in Rule model
Make RuleBuilder work without requiring callbacks
Add StoredValues field to Rule model for storing anything a given rule needs to store on the device
Add comments for rules
Merge branch 'master' into develop
Add instrument timing rule
Merge branch 'develop' of https://github.com/mnipper/AndroidSurvey into develop
Change currentDate to currentTime to be more descriptive, since it really is just a time
Inject failure message for rules
Fix typo
Clean up error log message
rotate camera surface based on device orientation, rotate taken image based on original orientation
save skipped questions onSaveInstanceState
Add Rules docs to readme
Merge branch 'develop' of https://github.com/mnipper/AndroidSurvey into develop
Add instrument survey limit per minute rule