The 'currconverter' esh plugin
----------------------------------

COMMANDS:

	'currconv -btc # converts # from USD to BTC

	'currconv -usd # converts # from BTC to USD

The 'currconv' plugin converts the U.S. dollar currency to Bitcoin and vice-versa.

It implements the 'process_builtin' method, looks for either the '-btc' or '-usd'
flags and exectutes the necessary conversion for #.

This plugin is run by entering 'currconv' with one of the two flags and a number.

--
Written by Sean Butler (seb1462) and John LeClair (johnkl) Spring 2015 for CS3214