Added new method for centering
Updated example code.
Documentation updated for the header file
Updated README file
Updated example section of the README file
Removing unnecessary pods
Fixed one typo.
Changes after code review
Merge branch 'feature/centring_constraints' of https://github.com/TriforkKRK/TFLayoutConstraintsFactory into feature/centring_constraints

Conflicts:
	Pod/Categories/NSLayoutConstraint+TFLayoutConstraintsFactory.h
Removed a non existing target reference form Podfile.
Merge pull request #7 from TriforkKRK/feature/centring_constraints

Feature/centring constraints