Follow this 4 easy steps to install 3rd party plugin and use it in your Createx based project:
Open your Terminal window and navigate to the root directory of your project (where you package.json file is located).
Run npm install <package name> --save. This command does two things: downloads package to node_modules folder and writes dependency to your package.json file inside dependencies object.
Run gulp vendor. This command will clean assets/vendor folder and move all the dpendencies that are listed in package.json file in dependencies object to assets/vendor including your newly downloaded plugins.
And last step is to link to plugin's scripts and styles in your HTML document.