show config shows local config if nothing else is specified

scripts/show_config.js

 #!/usr/bin/env node
 
+var path = require('path');
+
+// use the 'local' configuration if one isn't explicitly specified in the environment
+process.env['CONFIG_FILES'] = process.env['CONFIG_FILES'] ||
+  path.join(__dirname, '..', 'config', 'local.json');
+
 console.log(require("../lib/configuration.js").toString());