Bump actions/github to 2.2.0 to support GHES (#72)

* Bumping actions/github to 2.2.0

* Husky commit correct node modules

node_modules/@actions/github/README.md

@@ -4,38 +4,47 @@
 
 ## Usage
 
-Returns an [Octokit SDK] client. See https://octokit.github.io/rest.js for the API.
+Returns an authenticated Octokit client that follows the machine [proxy settings](https://help.github.com/en/actions/hosting-your-own-runners/using-a-proxy-server-with-self-hosted-runners). See https://octokit.github.io/rest.js for the API.
 
-```
+```js
 const github = require('@actions/github');
 const core = require('@actions/core');
 
-// This should be a token with access to your repository scoped in as a secret.
-const myToken = core.getInput('myToken');
+async function run() {
+    // This should be a token with access to your repository scoped in as a secret.
+    // The YML workflow will need to set myToken with the GitHub Secret Token
+    // myToken: ${{ secrets.GITHUB_TOKEN }}
+    // https://help.github.com/en/actions/automating-your-workflow-with-github-actions/authenticating-with-the-github_token#about-the-github_token-secret
+    const myToken = core.getInput('myToken');
 
-const octokit = new github.GitHub(myToken);
+    const octokit = new github.GitHub(myToken);
 
-const pulls = await octokit.pulls.get({
-    owner: 'octokit',
-    repo: 'rest.js',
-    pull_number: 123,
-    mediaType: {
-      format: 'diff'
-    }
-});
+    const { data: pullRequest } = await octokit.pulls.get({
+        owner: 'octokit',
+        repo: 'rest.js',
+        pull_number: 123,
+        mediaType: {
+          format: 'diff'
+        }
+    });
 
-console.log(pulls);
+    console.log(pullRequest);
+}
+
+run();
 ```
 
-You can also make GraphQL requests:
+You can pass client options, as specified by [Octokit](https://octokit.github.io/rest.js/), as a second argument to the `GitHub` constructor.
 
-```
+You can also make GraphQL requests. See https://github.com/octokit/graphql.js for the API.
+
+```js
 const result = await octokit.graphql(query, variables);
 ```
 
 Finally, you can get the context of the current action:
 
-```
+```js
 const github = require('@actions/github');
 
 const context = github.context;
@@ -46,3 +55,20 @@ const newIssue = await octokit.issues.create({
   body: 'Hello Universe!'
 });
 ```
+
+## Webhook payload typescript definitions
+
+The npm module `@octokit/webhooks` provides type definitions for the response payloads. You can cast the payload to these types for better type information.
+
+First, install the npm module `npm install @octokit/webhooks`
+
+Then, assert the type based on the eventName
+```ts
+import * as core from '@actions/core'
+import * as github from '@actions/github'
+import * as Webhooks from '@octokit/webhooks'
+if (github.context.eventName === 'push') {
+  const pushPayload = github.context.payload as Webhooks.WebhookPayloadPush
+  core.info(`The head commit is: ${pushPayload.head}`)
+}
+```