clarification on usage in readme

README.md

@@ -4,6 +4,59 @@ Plug-able webhook handler. Primary use case is to sync GitHub issues and Version
 
 > WARNING: under heavy development; not for production use.
 
+## Usage
+
+```shell
+npm install @andrew-codes/webhooked
+```
+
+### Example
+
+Example using with Azure Functions:
+
+```js
+const webhooked = require('andrew-codes/webhooked');
+
+module.exports = async function(context, req) {
+  try {
+    const responses = await webhooked({
+      presets: [],
+      plugins: ['@andrew-codes/webhooked-plugin-example'],
+    }).handle(req);
+    context.log(responses);
+    context.res = { status: 200 };
+  } catch (errors) {
+    context.log(errors);
+    context.res = { status: 500 };
+  }
+};
+```
+
+### Config Object
+
+Configuration accepts an array of presets and plugins. Plugin modules are **async** functions that accept a request object. They are responsible handling/doing something with each received webhook request. Although they receive every request, they are not required to act upon it.
+
+Presets are several plugins packaged into a single module. Both may accept options like the below:
+
+```js
+webhooked({
+  presets: [
+    'webhooked-preset-example',
+    [
+      'webhooked-preset-with-options',
+      {
+        option: 'values',
+      },
+    ],
+  ],
+  plugins: [
+    'webhooked-plugin-1',
+    [('webhooked-plugin-with-options', { option: 'value' })],
+    'webooked-plugin-another-one',
+  ],
+});
+```
+
 ## Running Locally
 
 - install node@>=10.15.1