Changed variable names to be more clear in example notebook

Added a demo of how to generate the tables

added a section about the image encoder

fixed links and formatting in readme

added main routine to rs.py

renamed readme to rest format, cleaned up formatting

made polynomial class subclasses return correct type

updated some URLs

fixed one last \pmod

added presentation. Added exampleimage.png

fixed imageencode.py

updated some comments and docstrings

updated readme

removed dependence on python2.6. removed support for bytearray objects.

comments adjustment