* Add HTML file for 2014-04-03/4 SDU workshop
* Add metadata for SDU workshop post
* Add text of SDU workshop blog post
Link to Version 5 teaching materials.

1. Change navbar to point to new `./lessons.html` page.
2. Create `./lessons.html` with links to `v4` and `v5`.

Note that `v5` isn't in this repo - we'll submodule it (or whatever) once it settles down.
Merge pull request #457 from gvwilson/integrating-v5-material

Link to Version 5 teaching materials.
Simplifying the 'about' page
Merge pull request #458 from gvwilson/simplifying-about-page

Simplifying the 'about' page
Blog post from Cordelia Brown
Merge pull request #459 from gvwilson/blog-do-not-be-worried

Blog post from Cordelia Brown
Add FURG bootcamp
Adding visualization of instructor skills
Merge pull request #461 from gvwilson/adding-a-graph-for-instructor-skills

Adding visualization of instructor skills
Merge pull request #460 from r-gaia-cs/furg

Add FURG bootcamp
Merge pull request #456 from stevenkoenig/2014-04-03-sdu-workshop-post

Blog post on SDU workshop
Adding Stephen Turner
Generating badge for Stephen Turner
Adding badge entries (some overdue)
Merge pull request #463 from gvwilson/adding-new-instructors

Adding new instructors