Small Success: achieved
Finally I was able to bundle the app and sign the app nicely, I did create an OK looking dmg, which installs the app.
Although I wanted to share it on my birthday but it was not ready then (26 Jun).
The script I wrote to bundle the app and sign it can be found here: https://github.com/dvkcool/scilab-work/blob/master/Script/bundlerSigner.sh
My mentors - great help
My mentor Mr. Paul and Mr. Clement David were of great help, if they were not there it would have not been possible.
The dmg file can be found here : https://drive.google.com/open?id=138ba4VrjMm0KOIJtHAupASMl23rTs3_k
Lets hope my mentors like it.
Hoping for Best.
Happily Coding
Divyanshu Kumar