[TEST] passed json objects on POST
[BUG] update module to interact with the model directly instead of the
previously implemented controller.
[CHORE] remove email property.
[BUG] take opts.hash instead of the hash object
[BUG] receive opts.hash instead of the hash object
[BUG] update test name
[BUG] accept an options object
[BUG] upadte method name to startGateway
[TEST] remove test username to avoid test fail due to duplicate username
[TEST] accept application/json on header
[FEATURE] create set ripple rest api module in the API core
[CHORE] remove unused module.
[CHORE] have http api interact with core API
[BUG] update passed object property name.
[BUG] send json response on config save callback
[TEST] skip test for now
Merge pull request #104 from ripple/http-api-tests

Http api tests