title: MPAndroidChart - How add put and show legends in a PieChart
body: <p>I´m read various tutoriais but most of then show the same example. The legend array is put in a constructor of:</p>
  
  <p><code>new PieData(legendValues, IPieDataSet dataSet)</code></p>
  
  <p>But PieData doesn't have this constructor.</p>
  
  <p>Does have anyone a sample code for this issue?</p>