Add Google into SystemRequirements for r-system-requirements to pick it up

Author: schloerke

DESCRIPTION

@@ -9,7 +9,7 @@ Description: An implementation of the Chrome Devtools Protocol, for controlling
 License: GPL-2
 Encoding: UTF-8
 LazyData: true
-SystemRequirements: Chrome or other Chromium-based browser. chromium: chromium (rpm) or chromium-browser (deb)
+SystemRequirements: Google Chrome or other Chromium-based browser. chromium: chromium (rpm) or chromium-browser (deb)
 Imports:
     jsonlite,
     websocket (>= 1.2.0),