use relative path in script

[macman]

@Gintaras 
I suggest the code editing area can be more concise
For example, put the reference assemblys or Dll and Namespace imports  into several tabs

recently I have found a software, Linqpad  https://www.linqpad.net/Download.aspx
in some respects, QM3 can absorb its advantages

I made a video demo,
https://www90.zippyshare.com/v/LfVijjH8/file.html