Merge pull request #46 from richard-green/master

Adding in new variable definitions into Core.fsx:
remove try catch block as errorlevel dontfailbuild should cater for  generating specflow report every time
Merge pull request #47 from spikeybill/ex

remove try catch block as errorlevel dontfailbuild should cater for  gen...
AUT-308 enable shadow copy for specflow tests
Merge pull request #48 from spikeybill/shadowc

AUT-308 enable shadow copy for specflow tests
Fix for execution of grunt tasks when windows username has spaces