Add a micro-state to increase and decrease numbers

using evil-numbers.
bindings on `<SPC> n +` and `<SPC> n -`
Documentation evil-numbers in readme
Minor tweak to register key bindings
Move Window manipulation section in readme

and rename Navigation section to Navigating
Move  evil-lisp-state to Editing section in readme
Move Project Management section in readme
Disable bindings for visual-regexp-steroids
Add Registers section in readme