title: `AttributeError: rint` when using numpy.round
body: <p>I have a numpy array that looks like this:</p>
  
  <pre><code>[[41.743617 -87.626839]
   [41.936943 -87.669838]
   [41.962665 -87.65571899999999]]
  </code></pre>
  
  <p>I want to round the numbers in the array to two decimal places, or three. I tried using numpy.around and numpy.round, but both of them give me the following error:</p>
  
  <pre><code>  File "/Library/Python/2.7/site-packages/numpy-1.8.0.dev_3084618_20130514-py2.7-macosx-10.8-intel.egg/numpy/core/fromnumeric.py", line 2452, in round_
      return round(decimals, out)
  AttributeError: rint
  </code></pre>
  
  <p>i used <code>numpy.around(x, decimals = 2)</code>
  and <code>numpy.round(x,decimals=2)</code></p>
  
  <p>Am I doing something wrong? Is there any other way to do this efficiently for a large array?</p>