added FastCGI config

backend/terahz.fcgi

@@ -0,0 +1,7 @@
+#!/usr/bin/python3
+# Minimal flup configuration for Flask
+from flup.server.fcgi import WSGIServer
+from app import app
+
+if __name__ == '__main__':
+    WSGIServer(app, bindAddress='/var/www/api/terahz.sock').run()