[SBS] minor fix and readme

Makefile

 all:
 	@echo "MAKEFILE WRAPPER. PLEASE USE ./sbs FOR A BETTER EXPERIENCE :)"
-	@./sbs
+	@./sbs -v
 
 .PHONY: clean
 

README.md

+#Skyward Boardcore
+
+TODO: write a good description of this project
+
+
+Build
+----
+
+Requirements: Python
+
+Type: `./sbs`. If you want the verbose mode, `./sbs -v`
+
+Also, `make` will call `./sbs -v`.