Version Bump 2.1.0: Automatically add Content-Type: application/json …

…when there is a request body

Helper function for README

Version Bump v1.2.4

Version Bump v1.2.4

Version Bump v1.2.4

Merge pull request sendgrid#9 from sendgrid/fully-fluent

Fully fluent

Version Bump v1.1.2

Version Bump 1.1.1

First working public version