docs update

Updated some docs stuff

docs/objects/Object/onEvent.md

@@ -0,0 +1,20 @@
+# onEvent
+
+`onEvent(self, event, ...)`
+
+This event gets called on any other event. Some examples: http_success, disk, modem_message, paste, peripheral, redstone,...
+
+You can find a full list here: [CC:Tweaked](https://tweaked.cc/) (on the left sidebar)
+
+Here is a example on how to add a onEvent event to your frame:
+
+```lua
+local basalt = require("basalt")
+
+local main = basalt.createFrame()
+main:onEvent(function(event, side, channel, replyChannel, message, distance)
+    if(event=="modem_message")then
+        basalt.debug("Mesage received: "..tostring(message))
+    end
+end)
+```