[Nitro] Preparing nitro 0.50

[Reid Thompson]

> 
> rthompso at jhereg: ~/src/repo.nitroproject.org$ darcs whatsnew
> {
> hunk ./examples/blog/app.rb 5
> -require "nitro_and_og"; include Nitro
> +require '/home/rthompso/src/repo.nitroproject.org/script/lib/glycerin'
> +#require "nitro_and_og"; include Nitro

reverted this -- running ok now -- sorry for the noise