Wall Bracket for Command Strips

A remix of http://www.thingiverse.com/thing:50147 with two changes:

1. removal of screw hole; and
2. altering the size of the back of the bracket to accommodate a 3M Command strip (size "small", ~16mm x 30mm)
   I inadvertently taught myself OpenSCAD to do this, so I will attempt to make it customizable like the original, and allow for the Command strip tab to be resized (to use bigger/smaller strips etc.)