added i2c temp sensor

Dependencies:   Temperature_I2C

Revision:
0:ae9c107f52e3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Temperature_I2C.lib	Sun Apr 01 18:29:25 2018 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/leeb/code/Temperature_I2C/#43ecb155d581