Finished conversion from md and rst.

index.rst

lessons/01-run-quit.rst

lessons/02-variables.rst

lessons/03-types-conversion.rst

lessons/04-built-in.rst

lessons/05-coffee.rst

lessons/06-libraries.rst

lessons/07-reading-tabular.rst

lessons/08-data-frames.rst

lessons/09-plotting.rst

lessons/11-lists.rst

lessons/12-for-loops.rst

lessons/13-conditionals.rst

lessons/14-custom-lesson.rst

lessons/14-looping-data-sets.rst

lessons/16-writing-functions.rst

lessons/17-scope.rst

lessons/18-style.rst