Version Bump v3.3.0: sendgrid#11 fix: Allow for multiple values for a…

… parameter

Version Bump v3.2.0: sendgrid#12 Add a helper returns the response bo…

…dy as a hash

Version v3.1.0: sendgrid#5 Ability to set the Content-Type header

Version Bump v3.0.2: sendgrid#8 Internal refactor

Version Bump v3.0.1: Turn on verification of TLS certificates

Verson Bump v3.0.0: BREAKING CHANGE response header is now a hash ins…

…tead of a string

Version Bump v2.1.4: Pull request sendgrid#2

Version Bump v2.1.2: Typo in 2.1.1 fix

Version Bump v2.2.1: Fix edge case for POST

Version Bump v2.1.0: Automatically add Content-Type: application/json…

… when there is a request body