Update menu and key binding and limit to html/php/twig file.

Hi,

I make 4 commits : 
-  	Limit keymap to html/php/twig file.
-  	Remove useless sub-menu in edit menu
     - Before : EDIT > Beautify HTML > Beautify HTML
     - After (now) : EDIT > Beautify HTML
-  	Remove "shift" key_binding like JS Beautify
     - CTRL + ALT + F like JS Beautify
-  	Update README to last commit
     - Add documentation to the new settings