Add workaround note with link to #1180

lib/units/websocket/index.js

@@ -561,6 +561,7 @@ module.exports = function(options) {
             ])
           }
           catch(err) {
+            //workaround for https://github.com/openstf/stf/issues/1180
             log.error('input.touchMove had an error', err.stack)
           }
         })