Mount /system RO/RW Pro [ROOT]

PLEASE DONT BUY THE PRO VERSION BEFORE YOU TESTED THE FREE VERSION. Do you want to edit a directory in /system? Or do you want to create a file in /system? Then you need to mount /system rewritable. That is possible with this app! With this app you can mount /system rewritable or just readonly. The only things you will need are Android 2. 3+ and root rights.