add links to style examples

Author: bahmutov

cypress/component/basic/styles/README.md

@@ -0,0 +1,11 @@
+With `cypress-react-unit-test`, you can add styles to your component in three ways:
+
+```js
+mount(<Component />, {
+  style: `CSS styles`,
+  stylesheets: '/path/to/component.css',
+  cssFile: '/path/to/css/file'
+})
+```
+
+See examples: [css-file](./css-file), [style](./style), [stylesheets](./stylesheets)