Updated CONTRIBUTING.md with npm publish instructions
Updated CONTRIBUTING.md with npm publish instructions

mefellows/pact-consumer-js-dsl,bochaco/pact-consumer-js-dsl,bochaco/pact-consumer-js-dsl,mefellows/pact-consumer-js-dsl,DiUS/pact-consumer-js-dsl,mefellows/pact-consumer-js-dsl,bochaco/pact-consumer-js-dsl,DiUS/pact-consumer-js-dsl,DiUS/pact-consumer-js-dsl