Add Git Bash support for windows

[avkabanov]

Now I'm using pretty awkward solution, will post it here:

• Create a link for C:\Program Files\Git\git-bash.exe in C:\WINDOWS\system32 using the name git-bash

• Create file run-git-bash.cmd in C:\WINDOWS\system32 containing the single command: cmd /C start git-bash --cd=%1

  In a plugin settings:

  • Terminal command: run-git-bash.cmd
  • Options: leave this field empty