Initial implementation of HTTP API.
Add api_get test.
Fix bugs uncovered.
Add sinon as a dev dependency.
Rename HTTP API request methods and add simple tests for all of them.
Better error handling.
Add tests for parameter and data sending.
Test and fix auth.
Add tests for JSON API.
Fix creating headers.
Merge branch 'develop' into feature/issue-11-add-http-api
Kill camels.
Merge branch 'feature/issue-11-add-http-api' into develop