Provide the ability to place status/quality badges in READMEs within subdirectories of a repository which get their state from the repository's build job(s).

It would be really neat to show badges and shields on a per-chart basis within helm's charts repo. TravisCI (or any other CI system) doesn't yet support the concept of a badge-per-subproject, which is essentially what we're up to here. So... a sort of "shim" service is needed to bridge the gap between:

• various helm tests (lint, e2e) that are run within a TravisCI build
• a badge service

Then you can build an endpoint to the badge service which can query travis-beacon in more complex ways, such as in our case:

GET /charts/redis-standalone

Which can return a json object such as:

{
  "name": "redis-standalone",
  "lint": {
    "lint_score": 95
    "lint_failures": {
      "lint-picky-1": "lint-picky-1 description",
      "lint-serious-5", "lint-serious-5 description"
    }  
  }
  "e2e_pass": false
}

When something like the shields.io queries the travis-beacon service with that endpoint and parses the output, we can end up with a badge in the charts.git/redis-standalone/README.md that looks like:

A beacon is a device designed to attract attention to a specific location. In a similar way, this project provides users of particular helm charts more focused visibility to the level of quality for individual helm charts while surveying the charts repo.

There's also an amusing rhyme of travis-beacon with the product Mavis Beacon Teaches Typing. That connection is unintentional, but puns can always be stretched to find amusement...