code: function defaultStrategy(projectDir, builder, cb)
  {
    const pkg = fs.realpathSync(INSTALLER_PACKAGE);
    builder.buildFromPackage(pkg, projectDir, cb);
  }
docs: Builds the installer from a tgz package that comes with dpat. This is the default cause when the app does not have its own installer
  
  @param {String} projectDir
  @param {InstallerBuilder} builder
  @param {Function} cb