Better support for long audio filenames

Added height/width constraints to cell’s label & enabled text scaling,
centering, truncation, etc.
Xcode 6 & latest cocoapods (0.34.4) updates

* Podfile format needed updating due to latest Cocoapods version
* Project.pbxproj reformat due to cocoapods & Xcode 6
Merge branch 'better-label-display'

* better-label-display:
  Better support for long audio filenames