Update README.md
Merge pull request #39 from ccwilliaster/chris

Enforce unique username, fig bugs in user status, minor display edits to...
Fixes to TestData.sql.
Merge pull request #40 from ccwilliaster/adrian

Fixes to TestData.sql.
Fixed TestData.sql.
Merge pull request #41 from ccwilliaster/adrian

Fixed TestData.sql.
add page screenshots