fix: Allow Sequelize CLI to use options set in config.json

Adds a config.js which uses lib/config to provide the Sequelize CLI with the same options as the application.

Fixes #1396
Signed-off-by: Maximilian Haye <mhajoha@gmail.com>

.sequelizerc.example

@@ -2,8 +2,8 @@ const path = require('path')
 const config = require('./lib/config')
 
 module.exports = {
-  config: path.resolve('config.json'),
+  config: path.resolve('config.js'),
   'migrations-path': path.resolve('lib', 'migrations'),
   'models-path': path.resolve('lib', 'models'),
-  url: process.env['CMD_DB_URL'] || config.dbURL
+  url: config.dbURL
 }

config.js

@@ -0,0 +1,3 @@
+const config = require('./lib/config')
+
+module.exports = config.db