v1.0.0: feat: Add automatic semver releases using semantic-release

ci(travis): Remove node versions <= 8

ci(travis): Update config to remove sudo, work only on master, and use node 8 only

ci(travis): Add coveralls and codecov.io coverage reports on success

ci(travis): Fix coverage by testing with coveralls only

ci(travis): Fix coverage & semantic release deployment scripts

ci(travis): add --pro flag on travis-deploy-once

ci(travis): Use default token arg value