Slotted Drawer Box

Another drawer box variant that cuts slotted holes on the sides of the box where the drawers are.

Have only tested the default settings for the box itself, have been having issues with layer separation when printed, any recommendations are appreciated.

Warning:The write library stored in customizer doesn't seem to accept the spacing options, and the newest version of OpenSCAD (2015.03) is causing some issues with the text right shifting option.

###Updates:
- 03/14/2015: Cleaned up some formulas to allow different drawer numbers, etc. to work properly parametrically.
- 02/23/2016: Appears that customizer application has broke this script from functioning properly. The same thing is happening with the predecessor this thing was remixed from. I'll have to do some investigation to find out what's changed.
- 02/26/2016: Updated script to swap to OpenSCAD text instead of write library. Use font text string as explained [here](https://en.wikibooks.org/wiki/OpenSCAD_User_