title: install flask-pymongo with pip- python 3.6
body: <p>hellow everyone,
  i tried to install PyMongo package with pip( i hope that is the way to do it). [its a part of a login system]</p>
  
  <p>my command line was:</p>
  
  <pre><code>C:/Python36/Scripts/pip install PyMongo
  </code></pre>
  
  <p>But, when i put it in the command line i got</p>
  
  <pre><code>the system cannot find the file specificied.
  </code></pre>
  
  <p>And the import line in the code was:</p>
  
  <pre><code>from flask_pymongo import PyMongo
  </code></pre>
  
  <p>Do someone knows what should i do?
  Thanks!!</p>