Uploading my php files. "physcomp2" is commented.

The most up to date version is physcomp2, and this version has comments.
"page" file is just a placeholder to let you know you're done, and
"physcompold" is the first ever version I wrote (not commented).
Fix 1.a.ii.4.
Bus to net.
Add voltage regulation example and parts.
Add template html pages.