docs update

Updated some docs stuff

docs/objects/Program/onDone.md

@@ -0,0 +1,19 @@
+# onDone
+
+`onDone(self, err)`<br>
+This is a custom event which gets triggered as soon as the program has finished.
+
+Here is a example on how to add a onDone event to your program:
+
+```lua
+local basalt = require("basalt")
+
+local main = basalt.createFrame()
+local aProgram = main:addProgram():execute("rom/programs/shell.lua")
+
+local function onProgramDone()
+    basalt.debug("Program has finished")
+end
+
+aProgram:onDone(onProgramDone)
+```