Add default route redirecting to /v1

This makes the root URL of the API a bit more friendly

Fixes https://github.com/pelias/api/issues/961

app.js

@@ -1,4 +1,3 @@
-
 var app = require('express')();
 
 var peliasConfig = require( 'pelias-config' ).generate(require('./schema'));
@@ -16,6 +15,10 @@ app.use( require('./middleware/jsonp') );
 
 /** ----------------------- routes ----------------------- **/
 
+
+var defaultRoutes = require('./routes/default');
+defaultRoutes.addRoutes(app);
+
 var v1 = require('./routes/v1');
 v1.addRoutes(app, peliasConfig);
 

routes/default.js

@@ -0,0 +1,12 @@
+// set up routes that are outside any particular API version
+function addRoutes(app) {
+  function redirectToV1(req, res, next) {
+    res.redirect(301, '/v1');
+  }
+
+  // default root URL traffic to V1 root
+  // which has a link to the readme and other helpful info
+  app.get('/', redirectToV1);
+}
+
+module.exports.addRoutes = addRoutes;