Following the contribution directions I downloaded the src files from the forge page and merged the files from NTM to the forge source files; I then tried to use BASH to setup the decompiled workspace but when running I ran into this error

Execution failed for task ':downloadClient'.
> java.io.IOException: Server returned HTTP response code: 403 for URL: http://s3.amazonaws.com/Minecraft.Download/versions/1.7.10/1.7.10.jar

This could just be me but I might need a second opinion

Hi @Shibva,
I had the same problem and fixed it on my fork, the first two commits fixed the problem. Commit one, Commit two. I plan to merge my repo back to this one at some point.

Does it come with IDE intogrstionn or just the fix?

It works for me in Intellij idea.

if I recall correctly, forge did a fuckup and the original files are no longer avalable at that locatioin. if this is the case then the instructions would need to be updated.