adding an arbitrary http driver
adding post and delete and separating regexes into separate functions
I tabbed a space
Merge pull request #95 from basho/ack-http

Add a generic HTTP driver
- fix selective receive problem that was killing performance
  on the riakclient_driver
- update rebar to fix the annoying recompiling problem
- add commented out eprof endpoints to aid in future profiling
  of workers
Merge pull request #96 from basho/pevm-riakclient-fix

riakclient fix + misc