Added underlying structure for Coins-E API.
Started adding code to call Coins-E API.
Added AbstractExchange to hold common utility methods.
Added operator overloading for Price.
Added test cases for Price class.
Corrected calculations involving Price class.
Restructured Cryptsy tests to remove non-unit tests.
Started reworking examples into code to dump JSON from Cryptsy.
Continued work creating sample test data for parsing.
Added unit test for parsing lists of markets.
Renamed Coins-E Parsers class to CoinsEParsers.