Minor style fixes and improvements for gpio code.
diff --git a/bbb_cape/src/bbb/gpi.h b/bbb_cape/src/bbb/gpi.h
index d63b9dc..be41a11 100644
--- a/bbb_cape/src/bbb/gpi.h
+++ b/bbb_cape/src/bbb/gpi.h
@@ -18,6 +18,6 @@
   int Read();
 };
 
-} // namespace bbb
+}  // namespace bbb
 
 #endif