Added some api endpoints

Everything under “Templates” in our API documentation is now
implemented:
- List templates
- Get specific template
- Get specific template+version
- Update template version
- Create new template
- Create new template version
Made a booboo
Upped version
-adding methods for grabbing logs
-adding methods for grabing segments and running a segment
Merge pull request #13 from agrunewald-va/feature/logs-and-segments

Logs & Segments via API Client
Merge.
Remove .emails() from README examples (DEPRECATED).
Merge pull request #16 from sendwithus/feature/finer-template-control

Feature/finer template control