title: install tflearn but not found contrib
body: <p>With Ubuntu 18.04 64bit , anaconda3 , and python3</p>
  
  <pre><code>&gt;&gt;&gt; import tflearn
  </code></pre>
  
  <blockquote>
    <p>Traceback (most recent call last):
      File "", line 1, in 
      File "/home/a1/anaconda3/lib/python3.7/site-packages/tflearn/<strong>init</strong>.py", line 4, in 
        from . import config
      File "/home/a1/anaconda3/lib/python3.7/site-packages/tflearn/config.py", line 5, in 
        from .variables import variable
      File "/home/a1/anaconda3/lib/python3.7/site-packages/tflearn/variables.py", line 7, in 
        from tensorflow.contrib.framework.python.ops import add_arg_scope as contrib_add_arg_scope
    ModuleNotFoundError: No module named 'tensorflow.contrib'</p>
  </blockquote>
  
  <p>But I can't install it.</p>
  
  <pre><code>pip install tflearn
  </code></pre>
  
  <blockquote>
    <p>Requirement already satisfied: tflearn in ./anaconda3/lib/python3.7/site-packages (0.3.2)
    Requirement already satisfied: Pillow in ./anaconda3/lib/python3.7/site-packages (from tflearn) (5.3.0)
    Requirement already satisfied: six in ./anaconda3/lib/python3.7/site-packages (from tflearn) (1.12.0)
    Requirement already satisfied: numpy in ./anaconda3/lib/python3.7/site-packages (from tflearn) (1.15.4)</p>
  </blockquote>
  
  <p>Pleeeeease help me :&lt;</p>