Finished Working Through the CQ Examples

All of the examples have been added up through the parametric enclosure. There is a cad module problem that was worked around in the "Rotated Workplanes" example, which we should circle back to eventually.

http://parametricparts.com/docs/examples.html#id15

Also, a correction was made to the "Parametric Enclosure" example where the screw posts were being extruded through the bottom wall of the enclosure. This fix should be mirrored to the example code on ParametricParts.com at some point.

Issues have been created for both of these items.