Merge pull request #99 from jordandukart/7.x

Correct the documentation and move it to a .php.
Merge pull request #100 from jordandukart/7.x

Strip prefix/suffix on empty children during render. Attempt at code cle...
Get rid of the use of the deprecated access callback.
Merge pull request #101 from adam-vessey/7.x-fix-deprecated-access-callback

Get rid of the use of the deprecated access callback.