Fixed long loading time

Thank you @sekwah41 for submitting a PR and @itotallyrock for reviewing it!

Minor Changes

• Changed to promises: a4e95b9
• Merge pull request #35 from sekwah41/master: 7e525c4

Patches

• Updated to check all ports at once: 876b111
• Used wrong indentation origionally: ea3bb58
• Fixed loading: 8dc5499
• Forgot to remove a console.log: 53162d9