Merge pull request #414 from jamespedwards42/develop

CexIO getOpendOrders Ignore Invalid CurrencyPair
updated travis CI file [ci skip]
refactored some variable names
typo fix [ci skip]
[VoS] Add a ton of crypto/crypto pairs
Implemented requesting a ticker from BTCCentral.
Implemented BTC Central order book and trades.
Fixed formatting in pom.xml
Fixed class naming in BTCCentralExchangeTest.
Renamed BTCCentralTrade to BTCCentralTrade.
Fixed java docs arguments.
Merge pull request #419 from kpysniak/btccentral

Implementation of BTC Central API
Cryptsy Generic DTOs added
Cryptsy Account DTOs added
Cryptsy MarketData DTOs added
Cryptsy Trade DTOs Added
Cryptsy Polling Services added
Cryptsy - More DTOs added
Cryptsy Test Data added
Crypsy Demo Functions added