Snippet format update

To match the starter (for the migration)

migrator.js

@@ -0,0 +1,24 @@
+const snippets = require('./snippet_data/snippets.json');
+const fs = require('fs-extra');
+const path = require('path');
+
+snippets.data.forEach(snippet => {
+  fs.writeFileSync(
+    path.join(
+      snippet.meta.archived ? './snippets_archive' : './snippets', 
+      `${snippet.attributes.fileName}`),
+`---
+title: ${snippet.id}
+tags: ${snippet.attributes.tags.join(',')}
+---
+
+${snippet.attributes.text}
+
+\`\`\`js
+${snippet.attributes.codeBlocks.es6}
+\`\`\`
+
+\`\`\`js
+${snippet.attributes.codeBlocks.example}
+\`\`\``);
+});