Bug 5627

I have commits for the following in https://github.com/sailthru/sailthru-ruby-client/pull/4:

https://github.com/sailthru/sailthru-ruby-client/commit/8a7af9b1cd352fbee699b001c05a7f24eade381e
https://github.com/sailthru/sailthru-ruby-client/commit/1e18f74f072c6e4b54420566cf95effa6673b28c
https://github.com/sailthru/sailthru-ruby-client/commit/a755fa8c588fbf0e6507d713cd8cee9dc72cd7da

I have chosen not to create a new optout method[https://github.com/sailthru/sailthru-ruby-client/commit/1c1ab2f08f0bf6df8c5c38f5a5f6e9b38a03e7ee] (as it should be built into set_email), nor create a variety of job wrappers [https://github.com/sailthru/sailthru-ruby-client/commit/20731796003c729cc7e9dc93e3012994059f6cbc] as they are essentially a wrapper for a process_job method