Update readme for 0.5.2
Changelog, blog post for 0.5.2, 0.4.2
Add starter-kit zip files to repo

These should be included so that anybody can build and update the docs
with as little confusion as possible.

I've left the directory in .gitignore so additions need to be
intentional as part of a release.
Add newest starter-kit downloads to docs
Update AUTHORS for 0.8
Fix npm-react build task, add to release
v0.8.0
Update materials for 0.8.0
v0.8 blog post