fix: Improve third-party reporters example (#104)

* Update readme

* Remove unused file

* Ref .mocharc.json

* One reporter, one runner

* Add actual failing test

* Link to tutorial

* Tutorial will cover more details ;)

packages/third-party-reporter/README.md

@@ -1,12 +1,13 @@
-# Third party reporter
+# Third-party reporter
 
-Full documentation about it [here](https://github.com/mochajs/mocha/wiki/Third-party-reporters).
+Mocha supports third-party reporters that can support advanced or specific use-cases. A reporter wraps around a [Runner](https://mochajs.org/api/runner) object and optionally listens to the events it emits.
 
-To use a reporter published on npm (e.g., lcov-reporter), install it locally and set `--reporter lcov-reporter`.
+To use a reporter published on npm (e.g., lcov-reporter), install it locally and set `--reporter lcov-reporter`. Alternatively, you can set the reporter in `.mocharc.json` as we've done here.
 
-It is a very similar setup for `third party UI's`, for more details see [here](https://github.com/mochajs/mocha/wiki/Third-party-UIs).
+It is a very similar setup for [third party UI's](https://github.com/mochajs/mocha/wiki/Third-party-UIs).
 
-## Commands
+For more details, including a list of which argument types go with which runner event, see [Tutorial: Create a Custom Reporter](https://mochajs.org/api/tutorial-custom-reporter).
 
-- `npm test` - run our tests using the local `.mocharc.json` config file. They are run from the default location (`/test`) with the reporter found in `src/my-reporter.js`. In this example there is 1 failing test included, to demonstrate handling.
+## Commands
 
+- `npm test` - run our tests using the local `.mocharc.json` config file. They are run from the default location (`/test`) with the reporter found in `src/my-reporter.js`.

packages/third-party-reporter/test/unit/my-reporter.spec.js

@@ -4,4 +4,8 @@ describe('Third party reporter usage', () => {
   it('should equal true', () => {
     equal(true, true);
   });
+
+  it('should fail', () => {
+    equal(true, false);
+  })
 });