Implement testing, CI and publish to NPM

• Update docs and publish to NPM (module code remains unchanged)
• Add testing with mocha/chai and configure travis

Develop initial function to fetch fixtures

Create a function to navigate to Bet365, and then to the relevant page for todays unplayed fixtures. This will return a fixture object with three attributes.

{
  scheduled: '19:45',
  homeTeam: 'Barcelona',
  awayTeam: 'Chelsea'
}