add markdown footnote rendering via markdown-it-footnote

.eleventy.js

@@ -64,7 +64,7 @@ module.exports = function(eleventyConfig) {
     permalink: true,
     permalinkClass: "direct-link",
     permalinkSymbol: "#"
-  });
+  }).use(require('markdown-it-footnote'));
   eleventyConfig.setLibrary("md", markdownLibrary);
 
   // Browsersync Overrides

package.json

@@ -38,6 +38,7 @@
     "gulp-image-resize": "^0.13.1",
     "gulp-rename": "^2.0.0",
     "gulp-sass": "^4.1.0",
+    "markdown-it-footnote": "^3.0.2",
     "node-path": "0.0.3",
     "node-sass": "^4.14.1"
   }