Set modules.

src/bootstrap/Button.md

@@ -0,0 +1,15 @@
+Bootstrap button component.
+
+All additional `props` are passed to the `<button>` HTML component.
+
+Can be used without parameters:
+
+```jsx
+<Button>Click</Button>
+```
+
+Using loading spinner:
+
+```jsx
+<Button loading disabled>Loading...</Button>
+```