Merge pull request #74 from edx/dev

Dev
Merge pull request #75 from edx/dev

Slight docs update
Merge pull request #79 from edx/dev

Dev
Merge pull request #80 from edx/dev

Dev
Merge pull request #90 from edx/dev

Dev
Merge pull request #95 from edx/dev

Dev
initial AUTHORS file
Merge pull request #96 from edx/jtauber/initial-authors

initial AUTHORS file
Merge pull request #98 from edx/dev

Dev
adding missing db size
also adding medium cache cluster
Merge pull request #99 from edx/bugfix/e0d/db-medium

adding missing db size