Merge pull request #159 from dianzrong/touchpad

Updated README to note trackpad/touchpad limitations

README.md

@@ -55,10 +55,14 @@ Wait until all three event writers have started:
 Type a few words into the terminal and move your mouse around the screen
 to generate some events, then stop the recording by pressing CTRL+C.
 
-Note: keep your recording short (i.e. under a minute), as they are
+Current limitations: 
+- recording should be short (i.e. under a minute), as they are
 somewhat memory intensive, and there is currently an
 [open issue](https://github.com/MLDSAI/OpenAdapt/issues/5) describing a
-possible memory leak.
+possible memory leak
+- the only touchpad and trackpad gestures currently supported are 
+pointing the cursor and left or right clicking, as described in this
+[open issue](https://github.com/MLDSAI/OpenAdapt/issues/145)
 
 
 ### Visualize