ambari post draft added
typos fixed
warmup section deleted
Minor changes - typo/spelling fixed, grammar
Update 2014-06-11-ambari-cluster-on-docker.markdown
Update 2014-06-11-ambari-cluster-on-docker.markdown
fix ambari-shell container: only TTY is required no STDIN, and seq/ambari includes ambari-shell
typos and adding enclosing paragraph