General updates

- Adds source to Podfile to remove deprecated warning from ```pod install```
- Configure build settings so app target and test target build successfully and tests pass in Xcode and on Travis.
- Uses xctool instead of xcodebuild so Travis logs are more readible
- Corrects the keyboard offset on iOS 8 in landscape mode
- Centers the infoLabel on an BZGInfoCell on wider screen iOS devices
- Extends the textfield to the right margin on wider screen iOS devices