Fix Start-DevPowerShell call from appveyor
Fix Start-DevPowerShell call from appveyor

bingbing8/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,KarolKaczmarek/PowerShell,kmosher/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,kmosher/PowerShell,JamesWTruher/PowerShell-1,bingbing8/PowerShell,jsoref/PowerShell,bingbing8/PowerShell,KarolKaczmarek/PowerShell,bmanikm/PowerShell,bmanikm/PowerShell,daxian-dbw/PowerShell,jsoref/PowerShell,jsoref/PowerShell,PaulHigin/PowerShell,bingbing8/PowerShell,daxian-dbw/PowerShell,TravisEz13/PowerShell,JamesWTruher/PowerShell-1,KarolKaczmarek/PowerShell,bmanikm/PowerShell,daxian-dbw/PowerShell,daxian-dbw/PowerShell,TravisEz13/PowerShell,TravisEz13/PowerShell,JamesWTruher/PowerShell-1,PaulHigin/PowerShell,kmosher/PowerShell,kmosher/PowerShell,bingbing8/PowerShell,TravisEz13/PowerShell,PaulHigin/PowerShell,jsoref/PowerShell,KarolKaczmarek/PowerShell,bmanikm/PowerShell,KarolKaczmarek/PowerShell,kmosher/PowerShell