Added a new method of outputing LaTeX tables from a Pandas DF

I was unhappy with the rather ugly format that pandas used to generate
latex tables. As I use LaTeX in the majority of my document processing
I implemented a new method of outputting tables.

It is still a work in progress, in particular MuliIndexes etc will
fail miserably. However it is a reasonable starting point for simple
tabular data. It also included the ability to quickly format how you want
by passing a format string.
Added the Series eplot method

This method simplifies the plotting of slightly more elegant matplotlib
plots. The method is currently implemented for series as these are
easier at this stage.
I will be extending this to DataFrames in the future as I don't like
the default plots pandas implements
Minor change to eplot to handle the situation in which no series name is passed
Added alpha channel to auto soften the plots slightly
Updated README to reflect latest changes