Add a \file doc comment to libnitrokey

Doxygen does not include top-level functions unless the file is
documented.  Therefore we have to add a \file doc comment so that the
functions show up in the Doxygen output.

1 files changed, 6 insertions, 0 deletions

diff --git a/NK_C_API.h b/NK_C_API.h
index b1bdf1e..289eaee 100644
--- a/NK_C_API.h
+++ b/NK_C_API.h
@@ -33,6 +33,12 @@
 #define NK_C_API
 #endif
 
+/**
+ * \file
+ *
+ * C API for libnitrokey
+ */
+
 #ifdef __cplusplus
 extern "C" {
 #endif