New Gatsby plugin: Scroll Indicator

## gatsby-config.js
plugins: [
  {
    resolve: `gatsby-plugin-scroll-indicator`,
    options: {
      // Configure your indicator bar color here
      color: '#BADA55',
    },
  },
];

## npm-install.js
npm install --save gatsby-plugin-scroll-indicator
	plugins: [
	{
	resolve: `gatsby-plugin-scroll-indicator`,
	options: {
	// Configure your indicator bar color here
	color: '#BADA55',
	},
	},
	];