Update building_block_commands.md

docs/bot_tutorial/building_block_commands.md

@@ -70,4 +70,34 @@ def on_add_command(self, event, args):
 All combined commands in 1 large codeblock:
 ```py
 class myPlugin(Plugin):
-  
+  @Plugin.command('ping')
+  def on_ping_command(self, event):
+    event.msg.reply('Pong!')
+    
+  @Plugin.command('echo', '<content:str...>')
+  def on_echo_command(self, event, content):
+    event.msg.reply(content)
+    
+  @Plugin.command('add', '<a:int> <b:int>', group='math')
+  def on_add_command(self, event, a, b):
+    event.msg.reply('{}'.format(a+b))
+    
+  @Plugin.command('tag', '<name:str> [value:str...]')
+  def on_tag_command(self, event, name, value=None):
+    tags = self.storage.guild.ensure('tags')
+
+    if value:
+      tags[name] = value
+      event.msg.reply(':ok_hand: created tag `{}`'.format(name))
+    else:
+      if name in tags:
+        return event.msg.reply(tags[name])
+      else:
+        return event.msg.reply('Unknown tag: `{}`'.format(name))
+        
+  @Plugin.command('add', parser=True, group='math')
+  @Plugin.parser.add_argument('a', type=int)
+  @Plugin.parser.add_argument('b', type=int)
+  def on_add_command(self, event, args):
+    event.msg.reply('{}'.format(args.a + args.b)
+```