Add score method for cvss v4

Author: 0llirocks

lib/cvss_suite/cvss_40_and_later.rb

@@ -41,5 +41,11 @@ def overall_score
 
       @all_up.score
     end
+
+    ##
+    # Alias for overall_score.
+    def score
+      overall_score
+    end
   end
 end