Merge pull request #39 from kmarsteller/master

Adding rough draft of plugin tagging
Edited plugin tagging section.
Merge pull request #40 from pziegfeld/plugin_tagging

Edited plugin tagging section.
Fix a couple of typos.
Merge pull request #41 from pziegfeld/fix_typos

Fixed a couple of typos.
fixing up Linux install procedure and a typo in the test server maintenance area.