migrate image editor component

packages/netlify-cms-editor-component-image/src/index.js

@@ -0,0 +1,23 @@
+import React from 'react';
+
+const image = {
+  label: 'Image',
+  id: 'image',
+  fromBlock: match => match && {
+    image: match[2],
+    alt: match[1],
+  },
+  toBlock: data => `![${ data.alt || '' }](${ data.image || '' })`,
+  toPreview: (data, getAsset) => <img src={getAsset(data.image) || ''} alt={data.alt || ''} />,
+  pattern: /^!\[(.*)\]\((.*)\)$/,
+  fields: [{
+    label: 'Image',
+    name: 'image',
+    widget: 'image',
+  }, {
+    label: 'Alt Text',
+    name: 'alt',
+  }],
+};
+
+export default image;