Added Error Checking to Setup.bat #2

Added check for the MinGW directory. Fixed a bug with script exiting out
of a CMD window. Fixed a bug with script dropping user into MinGW
directory. Fixed a bug with RD not deleting temp. Fixed a bug with
PNPUtil.exe not being present in the path.

Drastically rewrote the path script to handle Explorer's stubborn grasp of EnvVars. Tested on Win7.

Merge pull request #229 from NoahAndrews/patch-5

The readme was also wrong about the conflict between audio and RGB

Update README.md

Merge pull request #227 from NoahAndrews/patch-4

Fixed minor issues with Preonic readme

Merge pull request #228 from mrfoto/fix-planck-diagram

Tiny fix of Planck diagrams

Tiny fix of Planck diagrams

Fixed minor issues with Preonic readme

preonic readme

Merge branch 'master' of https://github.com/jackhumbert/tmk_keyboard

.hex files

preonic update

Merge pull request #224 from NoahAndrews/make-keymap-names-consistent

Make keymap names more consistent

Updated several keyboard folders to use new keymap naming scheme

Merge remote-tracking branch 'jackhumbert/master' into make-keymap-names-consistent

Merge pull request #223 from NoahAndrews/patch-3

Fix #198

Fix #198

Merge pull request #222 from NoahAndrews/patch-2

Fix error in Planck makefile comment

Fix error in Planck makefile comment

[This comment](https://www.reddit.com/r/olkb/comments/428umx/rgb_underglow/czaivbc) states that because both audio output and RGB support require the user of timer 3, they can't be enabled at the same time. That makes sense, I can see where audio.c uses timer 3. But this comment in the code states that the incompatibility is with MIDI support, which doesn't make sense based on what I see in the code. Please enlighten me if I'm mistaken.

Merge pull request #219 from IBNobody/master

Master