feat(stepper): Support additional properties for step#6509

Merged

g1shin merged 9 commits intoangular:stepperfrom g1shin:steps1

Aug 22, 2017

+483-168

Commits on Aug 16, 2017

Commits on Aug 17, 2017

Code changes based on review + test name changes
jwshinjwshin
committed

Commits on Aug 18, 2017

Refactor code for shared functionality between vertical and horizontal stepper
jwshinjwshin
committed

Commits on Aug 21, 2017

Refactor md-step-header and md-step-content + optional step change
jwshinjwshin
committed

Commits on Aug 22, 2017