docs update

Updated some docs stuff

docs/objects/Object/onRelease.md

@@ -0,0 +1,27 @@
+# onRelease
+`onRelease(self, event, button, x, y)`<br>
+The computercraft event which triggers this method is `mouse_up`.
+
+The difference between onRelease and :onClickUp is that :onRelease is called even when the mouse is no longer over the object, while :onClickUp is only called when the mouse is over the object.
+
+Here is a example on how to add a onRelease 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(self, button, x, y)
+  basalt.debug("Button got clicked!")
+end
+button:onClick(buttonOnClick)
+
+function buttonOnRelease(self, button, x, y)
+  basalt.debug("Button got released!")
+end
+button:onRelease(buttonOnRelease)
+```