Updated prod db config to sqlite

knexfile.js

@@ -10,15 +10,9 @@ module.exports = {
   },
 
   production: {
-    client: 'postgresql',
+    client: 'sqlite3',
     connection: {
-      database: 'my_db',
+      filename: './db.sqlite3'
-      user:     'username',
-      password: 'password'
-    },
-    pool: {
-      min: 2,
-      max: 10
     },
     migrations: {
       tableName: 'knex_migrations'