How to invoke executing a PowerShell script from gulp?

I am using gulp to build and deploy our application.

var msbuild = require('gulp-msbuild');
gulp.task('build', ['clean'], function () {
return gulp.src('../../*.sln')
    .pipe(msbuild({
        toolsVersion: 14.0,
        targets: ['Rebuild'],
        errorOnFail: true,
        properties: {
            DeployOnBuild: true,
            DeployTarget: 'Package',
            PublishProfile: 'Development'
        },
        maxBuffer: 2048 * 1024,
        stderr: true,
        stdout: true,
        fileLoggerParameters: 'LogFile=Build.log;Append;Verbosity=detailed',
    }));
});

However after build I have to call a PowerShell script file "publish.ps1", how can I call it in gulp?