title: PyXB module not recognised
body: <p>I have installed pyxb module regular way (python setup.py install) and here is the output: </p>
  
  <pre><code>Found bundle in pyxb/bundles/common
  Found bundle in pyxb/bundles/dc
  Found bundle in pyxb/bundles/wssplat
  Found bundle in pyxb/bundles/saml20
  running install
  running build
  running build_py
  running build_scripts
  running install_lib
  running install_scripts
  changing mode of /usr/local/bin/pyxbgen to 755
  changing mode of /usr/local/bin/pyxbwsdl to 755
  changing mode of /usr/local/bin/pyxbdump to 755
  running install_egg_info
  Removing /usr/local/lib/python2.7/dist-packages/PyXB-1.2.4.egg-info
  Writing /usr/local/lib/python2.7/dist-packages/PyXB-1.2.4.egg-info
  </code></pre>
  
  <p>However, I keep getting message: </p>
  
  <pre><code>ImportError: No module named pyxb
  </code></pre>
  
  <p>when running a script which contains:</p>
  
  <pre><code>import pyxb
  import pyxb.binding
  import pyxb.binding.saxer
  import StringIO
  import pyxb.utils.utility
  import pyxb.utils.domutils
  </code></pre>
  
  <p>Does anyone have an idea why this may occur? </p>