add sendgrid-perl example
add sendgrid-perl to api libraries page
fix github link
change to api_user=your_sendgrid_username, api_key=your_sendgrid_password
Update unsubscribes.html
Update profile.html

we return array
change spelling mistake in API Reference > Substitution Tags
fix quotes in RoR example, remove errant tag from C# example
remove repetitive text
remove URL param from subscription tracking
fix URL format for web API calls
Add reference to sending limits
Merge branch 'develop' of https://github.com/sendgrid/docs into issue/146
Merge pull request #158 from StewartJarod/issue#35

Update to Event and Parse
Merge pull request #146 from StewartJarod/issue/146

Add note about number of connections, messages per connection, etc
revert advanced stats changes until ready to deploy
add subuser delete docs
remove all parameters subheadings from API ref pages that had them
add example calls and responses to newsletter variations page
update example call creds