Add a comment to CLI's init

local-cli/init.js

@@ -3,10 +3,18 @@
 var path = require('path');
 var yeoman = require('yeoman-environment');
 
+// argsOrName can be:
+// - A string (e.g. 'AwesomeApp'). This is the common case when
+//   you run 'react-native init AwesomeApp' from the command line.
+// - An array with all the arguments. This can be useful when you
+//   need to pass custom arguments to the generator.
 function init(projectDir, argsOrName) {
   console.log('Setting up new React Native app in ' + projectDir);
   var env = yeoman.createEnv();
   env.register(require.resolve(path.join(__dirname, 'generator')), 'react:app');
+  // argv is e.g.
+  // ['node', 'react-native', 'init', 'AwesomeApp', '--verbose']
+  // args is ['AwesomeApp', '--verbose']
   var args = Array.isArray(argsOrName) ? argsOrName : [argsOrName].concat(process.argv.slice(4));
   var generator = env.create('react:app', {args: args});
   generator.destinationRoot(projectDir);