added capabilities column to posts, pages and medias
added capabilities column to posts, pages and medias
added capabilities column to custom post type
added capabilities column
removed bad files
changed permissions
Merge pull request #4 from eggemplo/capability-columns

Capability columns to test and review
fixed missing version updated
empty line removed
naming, clean-up
changed column title according to semantics
comment wording, format
updated readme with changes
formatting
tested on WordPress 3.7.1, updated tag
version & upgrade notice updated
version info in upgrade notice updated