Added working test of nested poll function on CLI

modpol/tests/nested_functions.lua

@@ -0,0 +1,24 @@
+dofile("../modpol.lua")
+
+print('\nRemoving existing orgs')
+modpol.orgs.reset()
+
+print('\nCreating an org called "test_org"')
+test_org = modpol.instance:add_org('test_org', 'luke')
+
+print('\nAdding user "nathan" to test_org')
+test_org:add_member('nathan')
+
+print('\nTrying to remove user "nathan" from empty member list')
+test_org:remove_member('nathan')
+
+print('\nInteractive test poll with nested functions...')
+modpol.interactions.text_query(
+   "nathan","Poll question:",
+   function(input)
+      modpol.interactions.binary_poll_user(
+         "nathan", input,
+         function(response)
+            print("Poll successful!")
+      end)
+end)