cert-selfsigned-example is executable

diff --git a/pygost/asn1schemas/cert-selfsigned-example.py b/pygost/asn1schemas/cert-selfsigned-example.py
old mode 100644 (file)
new mode 100755 (executable)
index 3a0a64a..20e873b
--- a/pygost/asn1schemas/cert-selfsigned-example.py
+++ b/pygost/asn1schemas/cert-selfsigned-example.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 """Create example self-signed X.509 certificate
 """