title: Tensorflow install fails with "compiletime version 3.5 of module does not match runtime version 3.6"
body: <p>I tried installing from pip:</p>
  
  <pre><code>pip3 install --user --no-cache https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.4.0-cp36-cp36m-linux_x86_64.whl
  </code></pre>
  
  <p>Then tried importing and got:</p>
  
  <pre><code> Using TensorFlow backend.
    /usr/lib64/python3.6/importlib/_bootstrap.py:205: RuntimeWarning: 
    compiletime version 3.5 of module 
    'tensorflow.python.framework.fast_tensor_util' does not match runtime 
    version 3.6
      return f(*args, **kwds)
  
    2017-11-10 09:35:01.206112: I 
    tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports 
    instructions that this TensorFlow binary was not compiled to use: SSE4.1 
    SSE4.2 AVX
  </code></pre>
  
  <p>Questions:</p>
  
  <ol>
  <li><p>I don't understand why the wheel says 3.6, but I get the warning about 3.5</p></li>
  <li><p>I want to compile to optimize for my cpu, so can I use pip to install from source rather than from binary wheel?</p></li>
  </ol>