Update blink1-mk2-tricks.md

Added  "Turn on one LED, then the other  |  Using BATCH FILE in Windows"  
Added  "infinite Rainbow Using Batch File for Windows" 

Good .MD  :)
Update blink1-mk2-tricks.md

Some CAPS fix
Update blink1-mk2-tricks.md

Caps again,  sorry! :)
Merge pull request #91 from goyetus/master

Some .bat  files added  for Windows people, thanks goyetus!