Progress on coinbase raw authenticated methods.
Implemented Coinbase transactions methods.
Implemented Coinbase Button.
Implemented Order, Users and Tokens
Complete raw implementation of Coinbase.
Implemented XChange generic services for Coinbase.
Coinbase Demos & Copyright Headers.
Merge remote-tracking branch 'upstream/develop' into develop-coinbase

Conflicts:
	xchange-coinbase/src/main/java/com/xeiam/xchange/coinbase/Coinbase.java
	xchange-coinbase/src/main/java/com/xeiam/xchange/coinbase/CoinbaseAdapters.java
	xchange-coinbase/src/main/java/com/xeiam/xchange/coinbase/dto/marketdata/CoinbasePrice.java
	xchange-coinbase/src/main/java/com/xeiam/xchange/coinbase/dto/marketdata/CoinbaseRate.java
	xchange-coinbase/src/main/java/com/xeiam/xchange/coinbase/service/polling/CoinbaseMarketDataServiceRaw.java
Merging.
remove keys
custom sorting of trades issue #316
Merge remote-tracking branch 'upstream/develop' into develop-coinbase
Updated api methods with @Consumes to  work with the latest rescu.
Merge pull request #320 from jamespedwards42/develop-coinbase

Coinbase Full Implementation & Demos
added the getter for orderId
Merge pull request #321 from andre77/develop

added the getter for orderId
Added getOpenOrders to BTERPollingTradeService
Merge pull request #322 from dhenry/develop

Added getOpenOrders to BTERPollingTradeService
Javadocs for Account And Market Data Raw Services
.gitignore cleanup [ci skip]