Added cart_url method to conform with api_url
Fixed transaction so it gets token_account from configuration if it is not passed as a parameter
Updated README
Merge pull request #1 from efreesen/temp_transactions

Temp transactions
Bump to version 0.3.0.
Adjusted cart_url method in temp_transaction and fixed README
Merge pull request #2 from efreesen/temp_transactions

Adjusted cart_url method in temp_transaction and fixed README
Bump to version 0.3.1.
Using HTTP proxy if needed.
Bump to version 0.3.2.
Refactored BaseTransaction to add Account

Refactored BaseTransaction into BaseService and now Transaction and Account extends of it.
Refactored ResponseParsers

Added TransactionResponseParser and AccountResponseParser extending from ResponseParser to more easily manage each response.
Refactored ParamParsers

Refactored ParamParsers to adapt to the new response parsers.
Added account documentation in README