for BLE Nano v2

Revision:
0:5f632ba61cb5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Sun Sep 24 09:49:58 2017 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*