Adapt transaction, trade and order objects.
Add a common file and a common quantize method
Fix file indentation

Conflicts:
	cryptex/exchange/btce.py
	cryptex/exchange/cryptsy.py
	cryptex/trade.py
	cryptex/transaction.py
Fix merge bug
Fix merge bug part two
Merge pull request #9 from jayme-github/adapt_tto

Adapt transaction, trade and order objects.