Add .gitgnore file
Add SoundTouch library
Create initial layout for quiz fragment
Create dialog to submit BPM during assessments
Update standard quiz to use new quiz fragment
Fix gitignore file location
Implement keypad for entering heart rate during assessment.
Implement simple heart rate assessment for standard quiz.
Add layout for quiz setup popup
Implement restarting and quitting quiz
Change duration of flasher
Setup assessment type option on quiz setup
Refactor quiz setup dialog. Pause sound when inputting heart rate during
quiz and resume sound when cancel is clicked.
Space out quiz setup dialog layout
Change layout for radio buttons used
Complete heart rate category assessment flow. Refactor accuracy
assessment.
Refactor
Implement timer for assessments
Fix timer bug caused by quit and restart buttons interferring with 
assessment timer
Remove bin/ folder from repo