Update bone.js

Author: jadonk

src/bone.js

@@ -1195,7 +1195,7 @@ var pinIndex = [
         "name": "VDD_3V3",
         "key": ["P9_3", "P9_4", "P1_14", "P2_23",
             "E1_2", "E2_2", "E3_2", "E4_2", "GP0_2", "GP1_2", "S1_1_2", "S1_2_2",
-            "UT0_2", "UT1_2", "UT5_2", "DSM2_1"] 
+            "UT0_2", "UT1_2", "UT5_2", "DSM2_1", "I2C_2"] 
     },
     {
         "name": "VDD_5V",