Add Gatsby SEO

[stbensonimoh]

Install necessary plugins

First install the plugins and the dependencies

npm install --save gatsby-plugin-next-seo react-helmet-async

Then add this to the plugin array in gatsby-config.js

module.exports {
  // ...
  plugins: [
    // ...
    'gatsby-plugin-next-seo'
  ],
}

For more information see this link and this one.