Epic Group Counter - determines who is here and who isn't!

Epic_Not_Here_Counter/Epic_Not_Here_Counter.xml

@@ -15,7 +15,7 @@
    save_state="y"
    date_written="2015-10-25 12:00:38"
    requires="4.00"
-   version="1.0"
+   version="1.6"
    >
 <description trim="y">
 <![CDATA[
@@ -142,6 +142,15 @@ EnableTrigger("End_Area", true)</send>
 Send("group")
 Send("echo ")</send>
   </alias>
+  <alias
+    match="^grupdate$"
+    enabled="y"
+    group="Epic_Not_Here"
+    regexp="y"
+    script="UpdatePlugin"
+    sequence="100"
+    >
+  </alias>
   <alias
    match="^grarea$"
    enabled="y"
@@ -212,6 +221,35 @@ end
 function OnPluginInstall()
   SetCounterDebug = 0
 end
+
+function UpdatePlugin()
+  async_ok, async = pcall (require, "async")
+
+  local raw_page = "https://raw.githubusercontent.com/Arcidayne/Aardwolf-Scripts/master/Epic_Not_Here_Counter/Epic_Not_Here_Counter.xml"
+  local plugin_file = GetPluginInfo(GetPluginID(), 20) .. GetPluginInfo(GetPluginID(), 1) .. ".xml"
+  local plugin_version = GetPluginInfo(GetPluginID(), 19)
+
+  if async_ok then
+    raw_return = async.request(raw_page, "HTTPS")
+  end
+
+  retval, page, status, headers, full_status = raw_return:join()
+  raw_return = nil
+
+  if status == 200 then
+    raw_version = string.match(page, '%s+version="([0-9%.]+)"')
+  end
+
+  if tonumber(raw_version) == tonumber(plugin_version) then
+    ColourNote("white", "blue", "You currently have the latest version!")
+  elseif tonumber(raw_version) > tonumber(plugin_version) then
+    local file = io.open(plugin_file, "w")
+    file:write(page)
+    file:close()
+    LoadPlugin(plugin_file)
+  end
+end
+
 ]]>
 </script>