Added attribute for client name to use with chef integration.

README.md shows Chef client creation for chef-rundeck using "chef-rundeck" as client name, but name written to the config file is "rundeck"
remove runit from chef-rundeck
parameterize log location and update user
remove the runit dependency
add upstart config for chef-rundeck
Merge pull request #9 from gsreynolds/feature/chef-rundeck_client_fix

Added attribute for client name to use with chef integration.