added main and defined M_PI

Dependencies:   BNOWrapper

Revision:
10:14374b492f1d
Parent:
9:08937d4564e5
--- a/BNOWrapper.lib	Wed Aug 07 17:26:41 2019 +0000
+++ b/BNOWrapper.lib	Wed Aug 07 18:50:14 2019 +0000
@@ -1,1 +1,1 @@
-https://os.mbed.com/teams/Affordable-Smart-Wheelchair/code/BNOWrapper/#dbe6d8d0ceb1
+https://os.mbed.com/teams/Affordable-Smart-Wheelchair/code/BNOWrapper/#f013530d8358