[eagle] Eaglepedia articles

I have set up a new category on Eaglepedia called "Hardware Design Guidelines".

http://www.amsat.org/amsat-new/eagle/EaglePedia/index.php/Category:Hardware_...

I seeded the new category with two new articles, "SMT Thermal Design" and "HEO Radiation Environment". I also added several old Eaglepedia articles that should be useful to hardware designers.

I'm new to posting Wikepedia-type articles so I'm not sure I got the category thing right. Also I'm not an expert on thermal design or the space radiation environment, so I hope other members of the Eagle team will do the Wikipedia thing and add to, modify, correct what I've done.

Al N1AL