Specify executable on run with cmd-shift-i

[rgbkrk]

Like #5, allow the user to specify a specific executable and args on run.

From ##atom:

[16:42:42] <intothev01d>     rgbkrk: yea i was talking about passing args for the script itself (as in if the script accepts running with command line args)
[16:42:57] <intothev01d>     just a thought. pretty cool like it is
[16:43:01] <rgbkrk>  Hmmm
[16:43:14] <rgbkrk>  I guess I could make another entrypoint
[16:43:21] <rgbkrk>  where you specify the command you want run
[16:43:49] <rgbkrk>  Which also makes it easy in case it's not supported by the package
[16:43:52] <rgbkrk>  I like that idea
[16:43:59] <rgbkrk>  intothev01d - What keybinding?
[16:44:08] <intothev01d>     cmd-shift-i maybe?
[16:44:12] <rgbkrk>  Cool
[16:44:14] <intothev01d>     dunno if that already does something

[Lbatson]

implemented with #74