Add basic usage example to readme

.dockerignore

@@ -0,0 +1 @@
+node_modules

Dockerfile

@@ -4,7 +4,8 @@ RUN apk add --no-cache make nodejs npm
 
 WORKDIR /root
 COPY package*.json ./
-RUN npm install
+RUN npm set progress=false && npm config set depth 0
+RUN npm install --only=production
 
 COPY src /root/src
 EXPOSE 3000

README.md

@@ -1 +1,19 @@
 # Makefile Hook
+
+Webhooks for your project made simple. Most projects have a Makefile, why not
+just expose an API to run them?
+
+```
+echo 'test:\n\texit 0' > Makefile
+docker run -d --rm \
+  -v $(PWD):/webhook \
+  -p 3000:3000 \
+  --name make-webhook \
+  expelledboy/make-webhook
+curl http://localhost:3000/test
+
+# Cleanup
+docker stop make-webhook
+```
+
+

package.json

@@ -2,9 +2,10 @@
   "name": "make-webhook",
   "version": "1.0.1",
   "description": "Run make targets through webhooks",
-  "main": "src/server.js",
+  "repository": "https://github.com/expelledboy/make-webhook",
   "author": "expelledboy",
   "license": "Apache-2.0",
+  "main": "src/server.js",
   "devDependencies": {
     "eslint": "^6.8.0",
     "eslint-config-airbnb-base": "^14.0.0",