Make sure modules: and name+out are not allowed in the config

[jrburke]

Just need to warn the user on incompatible config. Example:

//Load the requirejs optimizer
var requirejs = require('/Users/whitley/.rvm/gems/ruby-1.9.3-p125@twr/gems/requirejs-rails-0.5.6/bin/r.js'),
    //Set up basic config, include config that is
    //common to all the optimize() calls.
    basConfig = {
  "baseUrl": "/Users/whitley/src/twr/dashbuzz/tmp/assets",
  "modules": [
    {
      "name": "application"
    },
    {
      "name": "charts"
    }
  ],
  "paths": {
    "d3": "d3/d3",
    "d3.time": "d3/d3.time"
  }
};

// Function used to mix in baseConfig to a new config target
function mix(target) {
    for (var prop in basConfig) {
        if (basConfig.hasOwnProperty(prop)) {
            target[prop] = basConfig[prop];
        }
    }
    return target;
}

var module_specs = [
  {
    name: "application",

    out: '/Users/whitley/src/twr/dashbuzz/public/assets/application.js'
  },
  {
    name: "charts",

    out: '/Users/whitley/src/twr/dashbuzz/public/assets/charts.js'
  },
];