[action] add notify order action.
Merge pull request #249 from formapro-forks/notify-order-action

[action] add notify order action.
Release 0.12.6
Merge branch '0.12'

Conflicts:
	src/Payum/OmnipayBridge/OnsitePaymentFactory.php
	src/Payum/OmnipayBridge/PaymentFactory.php
	src/Payum/Paypal/ProCheckout/Nvp/PaymentFactory.php
Fixed small typo in doc files
Merge pull request #252 from crevillo/doc-typo-fix

Fixed small typo in doc files
[action] add generic order action.
Merge pull request #254 from formapro-forks/generic-order-action

[action] add generic order action.
[action] execute same request with details has to be the last action.
[bitcoin] basic structure.
[bitcoind] add skeleton classes.
[bitcoind] impl capture action.
[bitcoind] impl capture action.
[bitcoind] require bitcoind interface.