support for two different mapred-site files, based on if you are using mr1 or mr2
ensure config directory exists
Merge pull request #13 from supertom/master

mapred-site.xml differences for MR1 vs. MR2
Updating examples/oozie.pp to alter conf field as well as proto_action_conf in oozie WF_JOBS.
support passing in a version to rpm and apt sources
Merge remote-tracking branch 'upstream/master' into cdhversion