2.2.0 RC2 Release

This is the second (and hopefully final) release candidate release for AppSensor version 2.2.0.
Assuming no significant bugs, we'll move to a v2.2.0 final release in the late September 2015 timeframe.

This release is primarily concerned with the initial release of appsensor-ui, which are listed here: https://github.com/jtmelton/appsensor/blob/dev-v2.2/changelog.txt

This release will resolve the following tickets:
#10
#11