cleaned up/updated headers in source files [ci skip]
format and organize imports [ci skip]
Cex.io exchange draft implementation
Merge branch 'upstream/develop'

Conflicts:
	xchange-core/src/main/java/com/xeiam/xchange/currency/CurrencyPair.java
maven build fixed
Merge pull request #303 from br0x/develop

Cex.io exchange draft implementation
format and organize imports [ci skip]
minor changes
fixed bitcurex demos
checked args
raw/generic refactor for issue #270 - Bitfinex
raw/generic refactor for issue #270 - CaVirtex
raw/generic refactor for issue #270 - cex.io
manually added Bter module from pull request #285, fix forward merging issues, cleaned up a bit.
updated header files in cex.io module
general clean up with assistance from UCDetector, javadocs, light refactoring
general clean up in core module with assistance from UCDetector, javadocs, light refactoring
more clean up
add coinbase to example pom
Merge remote-tracking branch 'upstream/develop' into develop-coinbase