MNEMONIC-325: Add official website link to README.md

Author: Wang, Gang(Gary)

README.md

@@ -2,7 +2,9 @@
 
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-Apache Mnemonic is an advanced hybrid memory storages oriented library, it proposed a non-volatile/durable Java object model and durable computing service that bring several advantages to significantly improve the performance of massive real-time data processing/analytics. developers are able to use this library to design their cache-less and SerDe-less high performance applications.
+## <a href="https://mnemonic.incubator.apache.org/" target="_blank">Mnemonic Official Website</a>
+
+Apache Mnemonic is an advanced hybrid memory storage oriented library, it proposed a non-volatile/durable Java object model and durable computing service that bring several advantages to significantly improve the performance of massive real-time data processing/analytics. developers are able to use this library to design their cache-less and SerDe-less high performance applications.
 
 ### Features: