Use -C argument instead of temporary script file.

Run Eagle commands through -Cxxx command line instead of -Sxxx and a temporary
file. This seems to be more reliable and helps with Eagle not closing all of
its windows after QUIT.
Add export for pick & place machines.

Based on 'mountsmd.ulp' distributed with Eagle.
Create pick & place files in example Makefile.
Create a zip file with all the production files.
Add .gitignore to example project.
Update copyright date.
Also clean .gpi file
Updated README.