merge fix
missing dep
removed old msg
Use sendgrid import library in example
Merge pull request #9 from mikemee/patch-1

Use sendgrid import library in example
added support for timeout
Merge branch 'master' of github.com:sendgrid/sendgrid-go
Public URL
Fix bug
Update README.md
Fix Typo.
To will default to SMTPAPI header now
Added todo list for upcoming release
Use pointers instead of copying value
Removed external smtpmail dependency.

Added initial methods for handling To and partial support for FromName.
Golinted
See commit message. Re-write of the mail object removing dependencies.

1. Coverage of 100% in unittests
2. io.Reader is the only way to add attachments from the FS.
3. Email addresses will be validated in the client for To, Bcc, CC.
4. Cc support has been added.
5. Content ID support added.
6. Everything is done by reference.
7. Missing comments and Godoc :(
8. Golinted
Adding Godeps
Removed CC methods, added HeadersString Method
Removed unused tests and added test for HeaderString