large pi and better readme

examples/large_pi.lua

@@ -0,0 +1,20 @@
+set_console_mode(true)
+set_font_size(148)
+
+local last_pi = "----"
+local last_ps = "--------"
+function group(...)
+    local pi = db.read_value("PI") or "----"
+    local ps = db.read_value("PS") or "--------"
+    if last_pi ~= pi or last_ps ~= ps then
+        set_console(string.format("%s\r\n%s", pi, ps))
+        last_pi = pi
+        last_ps = ps
+    end
+end
+
+function event(event)
+    if event == 1 then
+        set_window_stick(not get_window_stick())
+    end
+end