Update README.md

hw5/README.md

@@ -123,6 +123,11 @@ We can similarly iterate over all of the flushed data (which optionally takes a
 for k,v in m.loadAll():
     print(k,v)
 ```
+It also takes in an optional parameter that includes the in memory keys as well:
+```
+for k,v in m.loadAll(subkey='myskey', inMemory=True):
+    print(k,v)
+```
 
 Since there are some keys in memory and some flushed to disk there are two commands to iterate over keys.
 ```