addressing comments and adding usage tutorial

Author: choldgraf

doc/faq/anatomy.png doc/_static/anatomy.pngdoc/faq/anatomy.png renamed to doc/_static/anatomy.png

@@ -15,7 +15,6 @@ The Matplotlib FAQ
    :maxdepth: 2
 
    installing_faq.rst
-   usage_faq.rst
    howto_faq.rst
    troubleshooting_faq.rst
    environment_variables_faq.rst