feat(compose): expose composeUniqueIssue method

closes #2

Author: travi

README.md

@@ -20,7 +20,10 @@ Load `octokit-plugin-unique-issue` and [`@octokit/core`](https://github.com/octo
 ```html
 <script type="module">
   import { Octokit } from "https://cdn.skypack.dev/@octokit/core";
-  import { uniqueIssue } from "https://cdn.skypack.dev/octokit-plugin-unique-issue";
+  import {
+    uniqueIssue,
+    composeUniqueIssue,
+  } from "https://cdn.skypack.dev/octokit-plugin-unique-issue";
 </script>
 ```
 
@@ -35,7 +38,10 @@ Install with `npm install @octokit/core octokit-plugin-unique-issue`. Optionally
 
 ```js
 const { Octokit } = require("@octokit/core");
-const { uniqueIssue } = require("octokit-plugin-unique-issue");
+const {
+  uniqueIssue,
+  composeUniqueIssue,
+} = require("octokit-plugin-unique-issue");
 ```
 
 </td></tr>
@@ -96,6 +102,20 @@ if (closed_issues.length) {
 }
 ```
 
+### Direct usage (not as a plugin)
+
+```js
+const octokit = new Octokit({ auth: "secret123" });
+
+const { data, updated } = await composeUniqueIssue(octokit, {
+  identifier: "super-unique-identifier",
+  owner: "tmelliottjr",
+  repo: "octokit-plugin-unique-issue",
+  title: "My unique issue",
+  body: "The body of my unique issue!",
+});
+```
+
 ## Options
 
 <table width="100%">

src/index.ts

@@ -6,6 +6,7 @@ import {
 import { VERSION } from "./version";
 import { composeUniqueIssue } from "./compose-unique-issue";
 
+export { composeUniqueIssue } from "./compose-unique-issue";
 
 export function uniqueIssue(octokit: Octokit) {
   return {