Long press to send message to application author.
Clips now handled as a zip file.
Can now set a time goal from the options menu. When the time goal is
reached, a beep will be heard. The goal is saved across instances of the
app via saving in SharedPreferences.
Added a reading practice mode. The practice mode can be toggled through
the options menu.
Deleted the unused activity_main.xml layout.
Now able to select the clips that will be used. This is set in the
options menu.
Added ability to give clips a thumbs up or down, which affects the
probability (no minimum, maximum of 8x probability).
Errors now display in a more user-friendly manner.
Merge pull request #2 from azlyth/master

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