change back font variable names
Merge pull request #2 from nevsaynev/xiaobinchen

change back font variable names
refactoring, HeartRateTwo, HomeActivity, LoadingScreenActivity.  Change object store / retrival
Merge pull request #3 from nevsaynev/xiaobinchen

refactoring, HeartRateTwo, HomeActivity, LoadingScreenActivity.
changed variable names, class fields, layout
changed variable names, class fields, layout
changed variable names, class fields, layout
Update README.md

Add description of each java file in src
Update README.md

change format
refacotring: HeartRateTwo, HomeActivity, LoadingScreenActivity
Merge branch 'master' of https://github.com/nevsaynev/DanceForHealth into xiaobinchen
refacotring: WeightAndStepActivity
loading and home activity, level progress bar
slight correct about achievement
add state and update state
fix popup
add congrats page
pass parameter to congratulation page
level up pop-up