Add FullCLR section to README.md
Add FullCLR section to README.md

* Setup environment
* Building
* Running
* Running from CI server
KarolKaczmarek/PowerShell,KarolKaczmarek/PowerShell,PaulHigin/PowerShell,bingbing8/PowerShell,PaulHigin/PowerShell,kmosher/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,jsoref/PowerShell,daxian-dbw/PowerShell,KarolKaczmarek/PowerShell,TravisEz13/PowerShell,daxian-dbw/PowerShell,bmanikm/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,bingbing8/PowerShell,bmanikm/PowerShell,bingbing8/PowerShell,TravisEz13/PowerShell,kmosher/PowerShell,JamesWTruher/PowerShell-1,JamesWTruher/PowerShell-1,kmosher/PowerShell,kmosher/PowerShell,KarolKaczmarek/PowerShell,bingbing8/PowerShell,jsoref/PowerShell,kmosher/PowerShell,bingbing8/PowerShell,jsoref/PowerShell,TravisEz13/PowerShell,daxian-dbw/PowerShell,jsoref/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,KarolKaczmarek/PowerShell,bmanikm/PowerShell,bmanikm/PowerShell,PaulHigin/PowerShell,daxian-dbw/PowerShell