Merge pull request #15 from kevintom/master

Add reference to sendwithus_ruby_action_mailer
added support for setting esp-account in api call
updated gemfile
Merge pull request #16 from sendwithus/feature-esp-overrides

added support for setting esp-account in api call
Added code and message details to unknown error messaging
Updated gem def
Reverted gemfile.  No need to update
Incremented version.rb
Bundled....?
Update README.md

Update instructions
Update README.md
Update README.md
Merge pull request #17 from sendwithus/error-msg

Add code and message to response msg
Update README.md
client updated (todo: readme)
updated changelogs,readme,version
Customer events added

Customer events can now be created through the ruby client.
upped that v-number
merged with dylans branc
make more clear

Changed the name, makes slightly more sense.