Updated docs

There is still stuff to do

docs/objects/Object/onClick.md

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+# onClick
+`onClick(self, event, button, x, y)`<br>
+The computercraft event which triggers this method is `mouse_click` and `monitor_touch`.
+
+Here is a example on how to add a onClick event to your button:
+
+```lua
+local basalt = require("basalt")
+
+local main = basalt.createFrame()
+local button = main:addButton()
+  :setPosition(3,3)
+  :setSize(12,3)
+  :setText("Click")
+
+function buttonOnClick()
+  basalt.debug("Button got clicked!")
+end
+button:onClick(buttonOnClick)
+```