Fixed README typo and added example service

Author: henhal

README.md

@@ -39,7 +39,8 @@ functions:
   hello:
     handler: index.handler
     layers:
-      - !Ref: LibLambdaLayer # TitleCase layer name followed by LambdaLayer 
+      # Note the reference being the TitleCase representation of the layer id followed by "LambdaLayer"
+      - {Ref: LibLambdaLayer}
 ```
 
 The `lib` layer will be installed and its `node_modules` packaged into the artifact, and the function will use the layer.

examples/example-layer-service/.gitignore

@@ -0,0 +1,6 @@
+# package directories
+node_modules
+jspm_packages
+
+# Serverless directories
+.serverless

examples/example-layer-service/hello.js

@@ -0,0 +1,7 @@
+const _ = require('lodash');
+
+module.exports.handler = (event, context) => {
+  console.log('Event: %j', event);
+
+  console.log(`Using lodash: ${_.range(10)}`);
+};

examples/example-layer-service/my-lib/nodejs/package-lock.json

@@ -0,0 +1,11 @@
+{
+  "name": "my-lib",
+  "version": "1.0.0",
+  "description": "",
+  "scripts": {},
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "lodash": "^4.17.15"
+  }
+}

examples/example-layer-service/my-lib/nodejs/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "example-layer-service",
+  "version": "1.0.0",
+  "description": "Example service for serverless-plugin-layer-manager",
+  "scripts": {},
+  "author": "Henrik Hall",
+  "license": "ISC",
+  "devDependencies": {
+    "serverless-plugin-layer-manager": "^1.0.2"
+  }
+}

examples/example-layer-service/package-lock.json

@@ -0,0 +1,29 @@
+service: example-layer-service
+provider:
+  name: aws
+  runtime: nodejs12.x
+
+plugins:
+  - serverless-plugin-layer-manager
+
+layers:
+  myLib:
+    path: ./my-lib
+    name: my-lib
+    description: My library
+    retain: true
+
+functions:
+  hello:
+    handler: hello.handler
+    layers:
+      # Note the reference being the TitleCase representation of the layer id followed by "LambdaLayer"
+      - {Ref: MyLibLambdaLayer}
+
+#custom:
+#  layerConfig:
+#    installLayers: <boolean>
+#    exportLayers: <boolean>
+#    upgradeLayerReferences: <boolean>
+#    exportPrefix: <prefix used for the names of the exported layers>
+