Merge pull request #10 from pdpiech/release

Merge release branches
Merge pull request #12 from pdpiech/release

Implement beginning of Shuttle Tracker
Merge pull request #14 from pdpiech/release

Complete Shuttle Tracker Implementation
Merge pull request #16 from pdpiech/release

Add download cancelling and exception prevention
Merge branch 'development' into release
Merge pull request #19 from JelloRanger/release

Fix temperature in Kelvin and sorted laundry list
Merge pull request #18 from JelloRanger/development

Fix temperature in Kelvin and sorted laundry list
Add ProGuard optimization parameters
Merge remote-tracking branch 'upstream/development' into development
Merge remote-tracking branch 'upstream/release' into release
Add check for Google Play Services to Shuttles

Verify Google Play Services is installed in MainActivity before
launching the ShuttlesFragment
Merge branch 'development' into release
Merge pull request #20 from pdpiech/development

Add ProGuard optimization and Google Play Services check
Merge pull request #21 from pdpiech/release

Add ProGuard optimization and Google Play Services
Fix laundry list duplication bug
Merge branch 'development' into release
Merge pull request #22 from pdpiech/development

Fix laundry list duplication bug
Merge pull request #23 from pdpiech/release

Fix laundry list duplication bug
Add weather background, fix bugs, secure code

Add beautiful picture for a WeatherFragment background
Change font sizes to be specified in 'sp' in all layouts for
cross-device compatibility (instead of fixed 'pt' sizes)
Secure all getters of classes in edu.rpi.rpimobile.models to return
copies of objects
Fix various duplication bugs
Fix various refresh button bugs
Change WeatherHttpClient class to more generic HttpClient class
Remove ProGuard optimization configuration files
Remove unused 'prefs_twitter.xml' file
Clean code formatting
Merge branch 'development' into release