title: lodash map and pick
body: <p>given an array </p>
  
  <pre><code>var test = [{a:1, b:2, c:3}, {a:4, b:5, c:6}, {a:7, b:8, c:9}]
  </code></pre>
  
  <p>how do I get an array of new objects like <code>[{b:2, c:3}, {b:5, c:6}, {b:8, c:9}]</code> with lodash?</p>
  
  <p>I have tried <code>_.map(test, _pick(???, ['b', 'c'])}</code>
  What should I put in <code>???</code> ? </p>