feat(bitbucket): detect and score READMEs on Bitbucket about readme-inspector HOT 2 CLOSED

Bitbucket API access

IMHO, we should go with with got, since:

1. We're already using got
2. We can adapt its response (and errors) with existing code

Still unsure about hosted-git-info: need to figure out whether we'll encounter uses cases in which we need to dynamically query based on:

// Psuedocode
const hostedGitInfo = require("hosted-git-info")
let gitHostInfo = hostedGitInfo.fromUrl(repoUrl, opts)
/* info looks like:
{
  type: "github",
  domain: "github.com",
  user: "npm",
  project: "hosted-git-info"
}
*/
// @internal factory method to generate the appropriate API?
readmeInspector.api = apiFactory.create(gitHostInfo)
// => Provides an api instance that readmeInspector can use

If we go the apiFactory direction, we'll need to define an interface for the methods:

getReadme (Octokit.prototype.repos.getReadme)

from readme-inspector.

Iceboxing this since:

1. Bitbucket has low market-share
2. GitLab support would be more useful

from readme-inspector.