Issue #2319675 by slashrsm: Chase HEAD.
Issue #2330909 by slashrsm: Chase HEAD.
by slashrsm: Add DEVELOPING.md and README.md.
by slashrsm: Add Travi CI support.
Merge pull request #3 from slashrsm/add_travis_integration

by slashrsm: Add Travi CI support.
Merge pull request #2 from slashrsm/add_developing_readme

by slashrsm: Add DEVELOPING.md and README.md.
Merge branch '8.x-1.x' into composer-json