code: function(name, type, filename, code) {
      this.name = name;
      this.type = type;
      this.filename = filename;
      this.code = code;
  }
docs: Represents a single System
  @param {string} name     - Name of the System
  @param {string} type     - System, RenderSystem, or BehaviorSystem
  @param {string} filename - File path
  @param {string} code     - Code generated for the System
  @constructor