Build badge is broken on atlasboard website

[Craig Guest]

When you load the atlasboard site via https://atlasboard.bitbucket.io/ the build status does not load as it's using an invalid url (https://drone.io/bitbucket.org/atlassian/atlasboard/status.png) which seems to have been from before pipelines was added.

Can you update the badge to use the url https://bitbucket-badges.atlassian.io/badge/atlassian/atlasboard.svg so this is accurate?

It may also be a good idea to changed the copyright to 2017 after the update, and change the url "http://localhost:3000/log" to "http://localhost:3333/log" (as 3333 is the port it opens on by default).

Happy to submit a pull request if you'll make that repository public (repository throws access denied right now).