First plugin try

Await to be built
Merge pull request #1 from martinqt/master

Add a link to the examples in the menu.
Replace the Github link with an icon.

This saves space, and we don't need text for something that isn't super
high on the priority list for first-time visitors.
Update header link
Tweak size of the Travis build status indicator.
Updated Flot submodule to the latest version.
Added a blog post about the 0.8 beta release.
Fix text formatting in the 0.8 beta blog post.
Additional minor text formatting tweaks.
Slightly reduce font size for blog sub-headers.
Added a download link for the beta zipball.
Merge pull request #2 from martinqt/plugin
Remove unecessary header & footer includes.
Tweak subhead spacing and other styles.
Cleaning up broken links and other editing.
Add back a link to PLUGINS.md.

Now that the header links to the list of plugins, we need a different
link to the plugin authoring guide.
Cleaned up home page wording and links.
Remove ugly header border when viewed under IE9.
Updated Flot submodule to the latest version.
Remove border around Travis image on IE.