Remove OmnipayBundle from project & make it standalone deprecated bundle.
Cleanup components README files
[ci skip]
Merge pull request #1398 from stloyd/bugfix/component_readme

Cleanup components README files
Merge pull request #1389 from stloyd/feature/remove_omnipaybundle

Remove OmnipayBundle from project & make it standalone deprecated bundle
Introduce templating helpers to allow replacing Twig as templating engine
Add CHANGELOG & UPGRADE notes [ci skip]