Update help

Author: Waren Gonzaga

lib/cli/index.js

@@ -111,6 +111,8 @@ exports.help = () => {
 
     ANSI Supported Features
 
+    /history/ or /history/all ......... historical chart globally
+
     /history/<country name> ........... historical chart for cases of a country
                                         ex. /history/philippines /history/korea
     /history/<ISO 3166-1 code> ........ shortcut historical chart for cases of a country