Test that any two pins don't have short circuit

Dependencies:   BLE_API mbed nRF51822

Revision:
0:bd673d937d4a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF51822.lib	Wed Jan 28 12:45:04 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#0e7a9efee6d7