Nimble is a thin .net wrapper over OpenNI allowing .net applications to access OpenNI devices smoothly.
To build the test app OpenNI2 need to be installed and the OPENNI2_REDIST environment must be set. These are normally set automagically by the installer.
Only Visual Studio 2012 or later is needed to build the Nimble wrapper itself.
Also builds fine with Mono. Very helpful as the OpenNI2 is available on Mac and Linux.