Add GM to greasemonkey

sindresorhus · sindresorhus · commit c55efa4ebda7 · 2017-11-17T11:59:53.000+07:00
Fixes #122 Closes #123
diff --git a/globals.json b/globals.json
@@ -1340,6 +1340,7 @@
 		"opr": false
 	},
 	"greasemonkey": {
+		"GM": false,
 		"GM_addStyle": false,
 		"GM_deleteValue": false,
 		"GM_getResourceText": false,
