Loved the tutorial at http://www.societyofrobots.com/electronics_Eagle3D_tutorial.shtml
but I think there's a small error in the text
One hint of useful advice. You may notice that your components placed on the PCB are rotated or translated wrong. Easily solved. For our earlier example, in the connector.inc file locate the macro and right before the #end add these lines:
//add numbers in millimeters to translate the part
//add angles to rotate the part
I think the file needed to be changed should be the 'user.inc' file.