Change the requirements for running locally to make it simpler (#41)

Author: MattCollins84

README.md

@@ -42,10 +42,10 @@ The fastest way to deploy this application to Bluemix is to click the **Deploy t
 
 Clone this repository then run `npm install` to add the Node.js libraries required to run the app.
 
-Then create an environment variable that mimics Cloud Foundry e.g.
+Then create an environment variable that store your Cloudant URL:
 
 ```sh
-export VCAP_SERVICES='{"cloudantNoSQLDB":[{"name":"simple-search-service-cloudant-service","label":"cloudantNoSQLDB","plan":"Shared","credentials":{"username":"USERNAME","password":"PASSWORD","host":"HOSTNAME","port":443,"url":"https://USERNAME:PASSWORD@HOSTNAME"}}]}'
+export SSS_URL='https://USERNAME:PASSWORD@HOSTNAME'
 ```
 
 replacing the `USERNAME`, `PASSWORD` and `HOSTNAME` placeholders for your own Cloudant account's details.

lib/credentials.js

@@ -1,5 +1,30 @@
-var services = process.env.VCAP_SERVICES;
-if (typeof services != 'undefined') {
-  services = JSON.parse(services);
+// If the Bluemix VCAP_SERVICES env variable is there
+// Use this to load credentials
+if (typeof process.env.VCAP_SERVICES !== 'undefined') {
+	var services = process.env.VCAP_SERVICES;
+	if (typeof services != 'undefined') {
+	  services = JSON.parse(services);
+	}
 }
+
+// Otherwise, look for the SSS_URL env variable
+// Build credentials object from that
+else if (typeof process.env.SSS_URL !== 'undefined') {
+	var services = {
+		cloudantNoSQLDB: [
+			{
+				credentials: {
+					url: process.env.SSS_URL
+				}
+			}
+		]	
+	}
+}
+
+// If we can't find any credentials
+// Throw error and die
+else {
+	throw new Error("Cloudant credentials not found");
+}
+
 module.exports = services;