Adding bindings to storybook

Author: vmarcosp

src/bindings/Storybook.bs.js

@@ -0,0 +1,14 @@
+type section
+
+type storybookModule
+
+type chapter = unit => React.element
+
+type decorator = chapter => React.element
+
+@val @module("@storybook/react")
+external storiesOf: (string, storybookModule) => section = "storiesOf"
+
+@send external add: (section, string, chapter) => section = "add"
+
+@send external addDecorator: (section, decorator) => section = "addDecorator"