Added nanowrimo recipe

This package provides some simple wordcounting and progress for NaNoWriMo type events (i.e. writing lots of words in a fixed amount of time).  I am the author and maintainer of said package which can be found at https://bitbucket.org/gvol/nanowrimo.el .  I have tested and things install on my system.

Thanks for MELPA, it has truly made my life much easier.

-Ivan