title: Torch : Save tensor to csv file
body: <p>I have been working with Torch. And my current program requires to export a Tensor containing reduced feature matrix. 
  I tried doing the following:</p>
  
  <pre><code>torch.save('t.csv',torch.Tensor({{1,2},{3,4}}),'ascii')
  </code></pre>
  
  <p>and the output was: </p>
  
  <pre><code>4
  1
  3
  V 1
  18
  torch.DoubleTensor
  2
  2 3
  3 1
  1
  4
  2
  3
  V 1
  19
  torch.DoubleStorage
  6
  1 2 3 4 5 6
  </code></pre>
  
  <p>Expected output: </p>
  
  <pre><code>1, 2, 3
  4, 5, 6
  </code></pre>
  
  <p>I'm hoping somebody has an idea as to how I can do this?</p>