Update and reword README.md
Update and reword README.md

nzlosh/st2,nzlosh/st2,Plexxi/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2