Merge pull request #1 from donjakobo/master

Updating
Added twitter and facebook instructions
added testing section
added google/openid config instructions
Added Yahoo! instructions
Merge pull request #28 from iam1980/patch-1

Added configuration instructions
Merge pull request #2 from donjakobo/master

updating
Added "forgot_password_recaptcha_enabled" option, fixed some formatting in sign_in.php
reformat sign_in.php
Added validation for username&email, removed output for form in order to catch XSS
Readded sanitised output
Merge pull request #29 from iam1980/master

XSS on forgot password, also added missing validation (username & password)
Merge branch 'master' of git://github.com/donjakobo/A3M