Added path_find support to task.sign_task
Fixed typo
Fixed ripple_api import
Updated Changelog
Made timeout an explicit parameter (default = 5 sec)
Fixed `tx` and `balance` calls
Merge remote-tracking branch '42cc/master'

Conflicts:
	CHANGELOG.rst
Bumped release number
Merge pull request #8 from akhavr/master

Added path_find support to task.sign_task