add important notice

Author: Charly POLY

README.md

@@ -2,6 +2,12 @@
 
 *Build React forms based on GraphQL APIs.*
 
+-----------------
+
+## The library is currently under active rewriting, please [see this ticket](https://github.com/wittydeveloper/react-apollo-form/issues/31) for updates
+
+-----------------
+
 ![https://s3.eu-west-2.amazonaws.com/github-oss/react-apollo-form/read-me-demo-preview.png](https://s3.eu-west-2.amazonaws.com/github-oss/react-apollo-form/read-me-demo-preview.png)
 
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