Merge pull request #83 from joelvbernier/master

Adds capability to handle rectangular detectors
adds missing files to MANIFEST.in
cleanup setup.py and fix windows post-install
git ignore dist directory
slightly better solution for windows start menu
yet another attempt to install package data
packaging cleanup
fixes anaconda launcher app specification
adds a QtWebView dock widget to serve hexrd docs
tweaks qt doc view
removes cruft
adds qt gui preferences dialog
begin user and developer documentation
adds intro to the dev guide
fix doc typos
fixes doc typo
tweaks versioneer to work with setuptools
adds documentation cli command
documentation cleanup
updates author info