docs: add usage

Author: pd4d10

README.md

@@ -0,0 +1,12 @@
+# github-oauth-api
+
+## Usage
+
+1. Fork this repo
+2. Replace the `name` field in `now.json` to what you want
+3. Add client secret: `now secrets add client_secret ${your secret here}`
+4. Run `now` to deploy
+
+## License
+
+MIT

now.json

@@ -1,4 +1,5 @@
 {
+  "name": "github-oauth-api-example",
   "env": {
     "CLIENT_SECRET": "@client_secret"
   }