title: ImportError when importing Basemap
body: <p>I have problems importing basemap, even though I just installed it via <code>pip install basemap</code>. I've tried both with python2.7 and python3:</p>
  
  <pre><code>python3
  &gt;&gt;&gt; from mpl_toolkits.basemap import Basemap
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named 'mpl_toolkits'
  
  python2.7
  &gt;&gt;&gt; from mpl_toolkits.basemap import Basemap
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", line 37, in &lt;module&gt;
      import _geoslib
  ImportError: libgeos_c.so.1: cannot open shared object file: No such file or directory
  </code></pre>
  
  <p>I'm on a ubuntu OS.</p>