.gitignore: ignore .direnv and .envrc files (#130)

Signed-off-by: Oli Strik <strik@olii.nl>

Author: olistrik

.gitignore

@@ -6,3 +6,7 @@ server/oidc-key.json
 oidc-key.json
 oidc-funnel-clients.json
 result
+
+# direnv files
+.envrc
+.direnv