fullscreen option

Added the fullscreen option to the TinyMCE Editor and a space before and after arrows.
Remove one extra space
Merge pull request #18 from devantoine/patch-1

fullscreen option closes #17
Updated Readme, closes #17
Merge branch 'master' of git://github.com/helios-ag/FMElfinderBundle
removed fullscreen option for tinymce, doesnt make sense :)