Fix the ajv-keywords "keyword select requires $data option" warning.

Author: trevorsmith

src/index.js

@@ -14,7 +14,9 @@ import requireCssModule from './requireCssModule';
 import resolveStringLiteral from './resolveStringLiteral';
 import replaceJsxExpressionContainer from './replaceJsxExpressionContainer';
 
-const ajv = new Ajv();
+const ajv = new Ajv({
+  $data: true
+});
 
 ajvKeywords(ajv);