Consistency in design and formatting update.
Updated Home (markdown)
Added link to "Install Zsh" page
Add Troubleshooting info
Put the Design link in the Help section
Formatted with markdownfmt
Removed a bunch of URL's pointing to @marvinmorris github page (spam?)
Link to Plugins Overview added
Moved non-help-wanted links to top.
Tweaked markup, phrasing, formatting.
Migrated from home v1