If you want to build the documentation yourself:

1. Make sure you have the package python-sphinx installed. For Fedora:

   $ sudo yum install python-sphinx
   

2. For Mint/Ubuntu/Debian:

   $ sudo apt-get install python-sphinx
   

3. Optionally, you can install the read the docs theme, that will make your in-tree documentation look just like the online version:

   $ sudo pip install sphinx_rtd_theme
   

4. Build the docs:

   $ make html
   

5. Once done, point your browser to:

   $ [your-browser] build/html/index.html