Add more details into README.md

README.md

@@ -2,3 +2,44 @@
 Ultimate Box Maker
 
 This is copied from https://www.thingiverse.com/thing:1264391 under the creative commons license with modifications logged here.
+It is publised as a remix on Thingiverse at https://www.thingiverse.com/thing:2938921
+
+Box design originally by:
+////////////////////////////////////////////////////////////////////
+              -    FB Aka Heartman/Hearty 2016     -
+              -   http://heartygfx.blogspot.com    -
+              -       OpenScad Parametric Box      -
+              -         CC BY-NC 3.0 License       -
+////////////////////////////////////////////////////////////////////
+
+Improved by jbebel:
+http://github.com/jbebel/Ultimate-Box-Maker
+
+To create a box, start by modifying the numerical parameters in the sections
+below. This can be accomplished using a release of OpenSCAD newer than 2015.03.
+As of the time of writing, this means that a development snapshot is required.
+The Thingiverse Customizer may also potentially work, but at the time of
+writing, it was inoperable.
+
+The simplest choice is to hand-edit the .scad file. Feature toggles are
+annotated with a comment. The other numerical parameters are measurements in
+mm. Everything is parametrized, so if you double all the non-feature parameters
+you will double the box size in every dimension. Certain parameters are derived
+from other parameters. If you wish to override them, you may, but sensible
+defaults have been chosen. Notably the design in this revision is particularly
+PCB-centric, in that you should start with your PCB size and adjust the margins
+around it to determine the box size. If you care more about the box size, you
+can set the Length, Width, and Height explicitly, but read the comments around
+them.
+
+Once your box is sized appropriately, you can use the Panel modules to design
+the holes and text for the front and back panels. Helper variables are provided
+to assist you in positioning these holes relative to the PCB, if your holes are
+for PCB-mounted components.
+
+When you are ready to print, adjust the values in the "STL element to export"
+section, and export each part one at a time.
+
+Experimental options are provided for a screwless design, but these are
+untested. In particular, the box fixation tabs may need thicknesses adjusted
+in order to have the appropriate flexibility.