evil-numbers, key binding prefix for registers, helm and coffeescript tweaks, fix micro-states

• New package evil-numbers to increase and decrease a number under point (documentation) (thanks to danielwuz)
• New key binding prefix r for registers (documentation)
• helm configuration tweaks (modifications) (thanks to ralesi)
• better auto-indent for coffeescript (modifications) (thanks to danielwuz)
• fix broken micro-states in Emacs 24.4