git: add notepadd++ as default editor

If you are on Windows and you want to use notepad++ as the default editor you can follow this instructions 

Prerequisits

We need some things installed on the local machine.

• git bash installed
• notepadd++ installed

Add notepadd++ to git config

Open GitBash and type:

git config --global "notepad++ -multiInst -nosession"

You can test it with:

git config --global -e