* Move Space Caded Parentheses to own layer
The space cadet parentheses where too much distracting. Therefore they are now on the function layer. I also added two more layers for also having angle brackets and curly braces on the shift keys forr better access.
Also updated the README
* Fixed SHIFT+Function key conflict
* Removed Angle Bracket and Curly Bracket layers, as they don't work corrrectly
* Add MIDI layer
* Respect brightness level on layer signalling
* Add hotkey in control layer for signalling state
* Update layout.png
* Remove image and replace it with imgur link
