Wrote bash script to rename .apk file to commit hash
Renamed scripts/ to utilities/
Refactored Song metadata out of Song.java, updated HostActivity's calls to access Song data, and updated the renameAPK bash script
Added username field to SongMetadata.java
Fixed some issues with renameAPK.sh and added /signed_apks
Merge pull request #17 from dgreenhalgh/master

Utilities folder and Song.java refactor