Introduce sequelize migrations to create and migrate database tables and removed database scripts. See http://sequelizejs.com/docs/latest/migrations

Created seeds to initialize database with dummy tasks.
Introduce config module to handle configurations per environment. See https://github.com/lorenwest/node-config
Updated README.md to reflect changes.

package.json

@@ -7,7 +7,8 @@
         "path": "~0.4.9",
         "mysql": "~2.0.0",
         "sqlite3": "~2.1.0",
-        "sequelize": "~2.0.0",
-        "socket.io": "*"
+        "sequelize": "~1.7.9",
+        "socket.io": "~1.0.6",
+        "config": "~1.0.2"
     }
 }