Adding continuuity/hadoop cookbook as a dependency, since it's required to initialize HDFS and to give us our configuration
Mark continuuity-site.xml generation as completed
Rename attributes from continuuity to reactor
Updating documentation for the continuuity->reactor attribute renaming
Updated repo recipe to use new attribute names
Create kafka.log.dir, if it isn't already available
Adding init recipe to setup HDFS for Reactor
Make sure we init when doing fullstack
Add documentation for config, fullstack, and init recipes