Merge pull request #104 from apache/memory-footnote

Direct users to README on Github for additional usage instructions
diff --git a/docs/Memory/MemoryPackage.md b/docs/Memory/MemoryPackage.md
index de69ac8..1b62afb 100644
--- a/docs/Memory/MemoryPackage.md
+++ b/docs/Memory/MemoryPackage.md
@@ -335,3 +335,7 @@
       }
     }
 ```
+
+### Using the Library
+
+See the project [README](https://github.com/apache/datasketches-memory/blob/master/README.md) for further instructions on how to use the Datasketches Memory library in your own applications.