Renamed and added new building files. Removed bitmap files and replaced with all vector graphics.
Added categories for electronics and tools. Added lots of graphics for each. Modified hardware to consumables and removed electroncs that were previously there.
Replaced lots of bitmaps with vector files. Routers, outdoors, buildings, towers, and wireless signals should be good.
Removed old .png version images of person. Superceded by SVG version in directory structure.
Merge pull request #8 from opentechinstitute/issue-6

Issue 6 - Removed bitmaps and replaced with vector files.