Add LICENSE.md
Add LICENSE.md

Fixes #131
richardfickling/radium,clessg/radium,clessg/radium,MicheleBertoli/radium,bencao/radium,AnSavvides/radium,basarat/radium,Cottin/radium,lexical-labs/radium,KenPowers/radium,KenPowers/radium,namuol/radium-insert-rule,rolandpoulter/radium,almost/radium,rolandpoulter/radium,bencao/radium,kof/radium,andyhite/radium,jurgob/radium,Cottin/radium,WillJHaggard/radium,bobbyrenwick/radium,azazdeaz/radium,yetone/radium,moret/radium,andyhite/radium,azazdeaz/radium,dabbott/radium,nfl/radium,haridusenadeera/radium,yetone/radium,haridusenadeera/radium,FormidableLabs/radium