this isn't working the servo just twitches

Dependencies:   Servo mbed Motor

Revision:
0:22157cad3c1e
diff -r 000000000000 -r 22157cad3c1e Servo.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Servo.lib	Sun Oct 05 17:05:46 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/Servo/#36b69a7ced07