Bitstamp streaming: correct transaction ID

A new class, BitstampStreamingTransaction extends BitstampTransaction
BitstampStreamingTransaction

Extends BitstampTransaction, is built with @JsonProperty("id") instead of @JsonProperty("tid")
Create StreamTradesJSONTest

This is to test that the BitstampStreamingTransaction works as intended
Create example-stream-trades-data.json
Json trade parsed as BitstampStreamingTransaction
Cosmetic change
Test for Travis
Rename BitstampStreamingTransaction to BitstampStreamingTransaction.java
Delete test
Only "exchange" balances on Bitfinex are relevant in the context of XChange (for exchange trading).
Merge pull request #702 from timmolter/bitfinex-balance-fix

Only "exchange" balances on Bitfinex are relevant in the context of XChange
Merge pull request #701 from ww3456/develop

Bitfinex trade history ids + OrderBook.equals()
Merge pull request #699 from stephane-coulomb/patch-3

Bitstamp streaming: correct transaction ID
Added polling timestamp to OB and Ticker of OkCoin and BitVc
Merge pull request #704 from jheusser/timestamp_okbitvc

Added polling timestamp to OB and Ticker of OkCoin and BitVc
update xchart jar
update text
clean up pom
Add OkCoin market demos and refactor code a bit
Merge branch 'develop' of github.com:timmolter/XChange into develop