Update README.md (#79)

* Add policy section
* Add information for ACP

README.md

@@ -14,5 +14,17 @@ make all-via-docker
 * [sUDT](https://github.com/nervosnetwork/rfcs/blob/master/rfcs/0025-simple-udt/0025-simple-udt.md)
 * [xUDT](https://github.com/nervosnetwork/rfcs/pull/428)
 
+All scripts above are deployed on mainnet, see RFC for more details.
+
+### Policy
+* All scripts have been developed by the nervosnetwork team.
+* Each script undergoes comprehensive review and audit processes to ensure quality and security.
+* All scripts are deployed on the mainnet, with no capability for upgrading, guaranteeing stability and reliability.
+
+
 ### Omnilock
 It is moved to a [new repo](https://github.com/cryptape/omnilock).
+
+### Anyone Can Pay
+It is moved to a [new repo](https://github.com/cryptape/anyone-can-pay).
+