Add docs on class attribute in roles, and other doc tweaks
-rw-r--r-- .gitignore
-rw-r--r-- .shipit
-rw-r--r-- Build.PL
-rw-r--r-- Changes
-rw-r--r-- MANIFEST.SKIP
drwxr-xr-x lib
drwxr-xr-x t
drwxr-xr-x xt