gem: add rubocop and fix style

lib/openvpn-status-web/parser/modern_stateless.rb

@@ -10,29 +10,27 @@ module OpenVPNStatusWeb
 
         text.lines.each do |line|
           parts = line.strip.split(sep)
-          status.client_list << parse_client(parts[1..5]) if parts[0] == "CLIENT_LIST"
-          status.routing_table << parse_route(parts[1..4]) if parts[0] == "ROUTING_TABLE"
-          status.global_stats << parse_global(parts[1..2]) if parts[0] == "GLOBAL_STATS"
+          status.client_list << parse_client(parts[1..5]) if parts[0] == 'CLIENT_LIST'
+          status.routing_table << parse_route(parts[1..4]) if parts[0] == 'ROUTING_TABLE'
+          status.global_stats << parse_global(parts[1..2]) if parts[0] == 'GLOBAL_STATS'
         end
 
         status
       end
 
-      private
-
-      def self.parse_client(client)
+      private_class_method def self.parse_client(client)
         client[2] = client[2].to_i
         client[3] = client[3].to_i
         client[4] = DateTime.strptime(client[4], '%a %b %d %k:%M:%S %Y')
         client
       end
 
-      def self.parse_route(route)
+      private_class_method def self.parse_route(route)
         route[3] = DateTime.strptime(route[3], '%a %b %d %k:%M:%S %Y')
         route
       end
 
-      def self.parse_global(global)
+      private_class_method def self.parse_global(global)
         global[1] = global[1].to_i
         global
       end

lib/openvpn-status-web/parser/v1.rb

@@ -13,7 +13,7 @@ module OpenVPNStatusWeb
           (current_section = :rt; next) if line == "ROUTING TABLE\n"
           (current_section = :gs; next) if line == "GLOBAL STATS\n"
           (current_section = :end; next) if line == "END\n"
-      
+
           case current_section
           when :cl
             client_list << line.strip.split(',')