I am a phpstrom ide user but i need a faster ide for my php project development.Even i love git and notepad++ as a editor.  I was searching to get any any help and at last i got a articles from here and i put it in this web as my collection. I hope it will be helpful to you to git commit in npp. Here are a few steps to use git and commit your files from Notepad++.
Process:
  1.     Download and install Tortoise Gi
  2.     Download and install mysysgit
  3.     Download the dll file for git on notepad++ from here
  4.     Drop the .dll file into the plugins folder of notepad++
  5.     One thing to make sure, you must already have committed repo in your computer
  6.     So next time whenever you commit from notepad++, it can recognize the file structure and all you   got to do is to enter username and password
  7.     Open Notepad++, Plugins -> Git -> Commit File
  8.     Put your commit message and rest is simple (username and password)

Collected from: https://webdeveloperankitakulkarni.wordpress.com/2013/10/19/git-with-notepad/