message: chore(build): simplified versioning
diff: "test": "ng test -sr",
  "test-cross": "SAUCE=true ng test -sr",
  "test-coverage": "ng test -sr -cc",
  - "version": "npm run flow.changelog && git add -A",
  + "postversion": "run-s changelog git-add git-commit-ammend",
  + "git-add": "git add -A",
  + "git-commit-ammend": "git commit --amend --no-edit -n",
  + "changelog": "conventional-changelog -i CHANGELOG.md -s -p angular -r 2",
  "pree2e": "webdriver-manager update",
  "e2e": "protractor",
  "e2e-cross": "SAUCE=true npm run e2e"
  "ng2-page-scroll": "4.0.0-beta.4",
  "ngm-cli": "0.4.4",
  "npm-run-all": "4.0.2",
  - "pre-commit": "1.2.2",
  "protractor": "5.1.1",
  "reflect-metadata": "0.1.10",
  "require-dir": "0.3.1",
  