Merge pull request #5072 from RocketChat/tests

.scripts/start-xvfb.sh

.scripts/start.js

.travis.yml

package.json

tests/steps/0-login.js

tests/steps/1-register.js

tests/steps/2-forgot-password.js

tests/steps/3-basic-usage.js

tests/steps/4-resolutions.js

tests/steps/5-emoji.js

tests/steps/6-channel.js

tests/steps/7-user-preferences.js