title: jira-python transitions REST API
body: <p>I've recently started working with <code>jira-python</code> and I noticed that there was a method <code>jira.transition_issue</code> that takes in an argument <code>resolution</code>. What is <code>resolution</code> and why does it have an <code>id</code>?</p>
  
  <p>Example:</p>
  
  <pre><code>jira.transition_issue(issue, '5', assignee={'name': 'pm_user'}, resolution={'id': '3'})
  </code></pre>
  
  <p>Additionally, for transitions, when I do <code>jira.transitions(issue)</code>, I often get </p>
  
  <pre><code>[{u'id': u'701',
    u'name': u'Close Issue',...
  </code></pre>
  
  <p>Why does close issue have an <code>id</code> of <code>701</code>? Isn't closed an id of <code>2</code>?</p>