title: Can't use pytesseract in Python 2.7
body: <p>I tried to use pytesseract:</p>
  
  <pre><code>    import pytesseract
      from PIL import Image
      pytesseract.pytesseract.tesseract_cmd = 'C:\\Python27\\scripts\\pytesseract.exe'
      im = Image.open('Download.png')
      print pytesseract.image_to_string(im)
  </code></pre>
  
  <p>But I got this error:</p>
  
  <pre><code>    Traceback (most recent call last):
      File "C:/Python27/ocr.py", line 11, in &lt;module&gt;
          print pytesseract.image_to_string(im)
      File "C:\Python27\lib\site-packages\pytesseract\pytesseract.py", line 
               125, in image_to_string
    raise TesseractError(status, errors)
    TesseractError: (2, u'Usage: python pytesseract.py [-l lang] input_file')
  </code></pre>
  
  <p>What is wrong?</p>