Adding readme.md

Issue #1
Its not on a submenu at phpBB.com
[issue/3] Add .gitignore

Issue #3
Reduce the use of "CAPTCHA" and update the "CAPTCHA Module Settings" section to reflect the current state of the ACP page.
User guide updates from the Hackathon
Rewrite of the permissions section of the administrator guide.
Merge pull request #4 from michaelcullum/issue/3

[issue/3] Add .gitignore
Merge pull request #5 from prototech/captcha-renaming

Reduce the use of "CAPTCHA" and update the "CAPTCHA Module Settings" section to reflect the current state of the ACP page.
Merge pull request #2 from michaelcullum/readme

Adding readme.md