imnotamember/ValidityCheck: Beta Fish Battle

This is the first public version of Validity Check.

There are a few known bugs in the software, but as long as users keep within the confines of the instructions in the general README.MD document they shouldn't have any problems (fingers crossed).

I hope this helps many folks who are either on a time-constraint or in need of active, realtime analysis of attention checks in their surveys.

If you do find this software useful, please help support it by:

1. Email me with some positive vibes (much appreciated!)
2. Citing the software in your publications (very much appreciated!!)
3. Contributing to richer documentation (super-duper appreciated!!!)
4. Contributing to the source code itself (instant best-friend status!!!!)