add note tag

Author: ItsNickBarry

README.md

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 # SolidState Solidity
 
-> A version of this library has been audited by Hacken. More details are available in [the report](https://hacken.io/wp-content/uploads/2021/10/15092021_Premia_SC_Audit_Report.pdf).
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 SolidState is an upgradeable-first Solidity smart contract development library.
 
 It consists of the following packages:
@@ -13,6 +11,8 @@ It consists of the following packages:
 | `@solidstate/library`   | functions for interacting with and validating contracts                               | [📖](./lib/README.md)       |
 | `@solidstate/spec`      | portable tests which may be run against third-party implementations of core contracts | [📖](./spec/README.md)      |
 
+> **Note**: A version of this library has been audited by Hacken. More details are available in [the report](https://hacken.io/wp-content/uploads/2021/10/15092021_Premia_SC_Audit_Report.pdf).
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 ### Contracts
 
 All contracts are designed to either be deployed through the standard `constructor` method, or referenced by a proxy. To this end, the [diamond storage](https://medium.com/1milliondevs/new-storage-layout-for-proxy-contracts-and-diamonds-98d01d0eadb) pattern is employed exclusively.