Added script to generate "all in one" playlist

package.json

@@ -10,7 +10,8 @@
   ],
   "main": "index.m3u",
   "scripts": {
-    "test": "node test/index.js"
+    "test": "node test/index.js",
+    "generate": "node src/generate.js"
   },
   "repository": {
     "type": "git",