Update README.md

Author: flipcoder

README.md

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 ![midimech](https://i.imgur.com/iNKaTi3.png)
 
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 **IN DEVELOPMENT**
 
 Midimech is an alternative musical note layout system for the LinnStrument and LaunchPad X.  It uses a wholetone-based isomorphic layout.  I was surprised to find out this layout and its variants were not in common usage, despite being incredibly convincing.  Lacking an isomorphic controller, I used to map this layout to my mechanical keyboard to play.  Because of this, my friends and I referred to it as "playing the mech".  The layout could also be referred to as Wholetone +5 or Diagonal Wicki-Hayden but I still prefer calling it mech.