minor doc errors

[jbranc]

on this page http://phileo.readthedocs.org/en/latest/templatetags.html
refers to phileo_widget as {% likes_widget user object %}

also, you don't mention the change in naming for the auth backend. in changelog 0.4 it has
"phileo.auth_backends.PermCheckBackend" but 0.5 uses "phileo.auth_backends.CanLikeBackend"

you could also save folks some time by mentioning the use of bootstrap-ajax.js in the installation section

thanks for an excellent app!

[paltman]

@jbranc thanks for this. i will get to this in a few days time. it would be a bit help if you could send a pull request with the changes already made, but if not, no worries, i'll get to it soon.