Added Client Counter, Renamed default metrics, dependency updates

README.md

docs/mutation/bind-mutation-test-report.js

docs/mutation/index.html

docs/mutation/mutation-test-elements.js

docs/mutation/stryker-80x80.png

docs/test-report.html

examples/src/app.ts

package-lock.json

package.json

src/index.spec.ts

src/index.ts