made some basic variables configurable via attributes file
added attribute documentation
adding new chefspec version
properly create default folders
Merge pull request #4 from TheSerapher/main-config

properly create default folders
made recipes FC 1.7.0 compliant
Merge pull request #6 from TheSerapher/fc-1.7.0

Fc 1.7.0
Merge branch 'config-attributes' into next

Conflicts:
	README.md
	templates/default/roundcube/main.inc.php.erb
adding plugin support to Roundcube installation
fixing conflict merging from master into branch