Initial STL of the extruder.  Code is modified from Jonas's, as you can tell.  It's somewhat hacked together.  I'll clean up the code and post the .scad in a format compatible with my repo soon.

The extruder is currently printing.  If it works out I'll add the rest of the bits.
Added more material to the base, and sized the pushfit hole properly.

I'm not going to print this until my new pushfits come in, there's apparently a decent amount of variation.
Redid the fillet, and adjusted sizing for the hotend clamp.
Merge branch 'master' of http://github.com/paenian/bertha

Updated the readme online