add utility method to play audio resource

RUtils.playAudioResource stops any playing audio and plays the audio file
resource that is passed in as an argument(remote url or on filesystem)
skeleton to display listview results

TODO: dynamically generate a listview of results on search, currently
hardcoded
placeholder progress bar on search page

currently the search page does not yield any list view onCreate so I put a
placeholder progress bar instead.

Once the search is made however, the a new instance of the
SearchActivity is started and the progress bar disappears.
.gitignore matches Github's Android.gitignore

https://github.com/github/gitignore/blob/f0f5e38db20332f55b95d938a55e98ae9b05bb3d/Android.gitignore
removed extraneous files from repository