Adds POST test for BMP280 sensor board. Includes driver

Dependencies:   BMP280 ELEC350-Practicals-FZ429 BME280

Fork of Task690-mbed-os-FZ429ZI by University of Plymouth - Stages 1, 2 and 3

Revision:
6:4b449e2d4ad1
Parent:
5:0fe69963f1dd
--- a/sd-driver.lib	Wed Dec 06 11:20:46 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-https://github.com/ARMmbed/sd-driver/#ae7e7440054c9447f8255bdccbcc523b3f6dffe4