Adds the code review lib logic
Adds dcommit and code review functions.

This commit uses the code review library to close the open rb and
then closes the JIRA ticket accordingly. The comment to resolve the
 JIRA ticket is composed of the following:
  1)  review board status
  2)  git-review dcommit result
  3)  current branch's last commit log

 The usage flags to get the branch status has been modified to accept
 the following as a valid command:
 > git-jira --branch
 > git-jira --branch status

 The current branch name will be used in --dcommit command if the
 JIRA id is not provided.