Updated for mbed OS 5.4

Revision:
0:9ff439f5bf2e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Thu Mar 30 13:35:55 2017 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*