Support command line invocation

Effectively this opens the KorAP API also for shell scripts.

Change-Id: I10181f7882f07ef1d9dc12e572b387af9f79fcba
diff --git a/bin/korapclient b/bin/korapclient
new file mode 100755
index 0000000..70413fe
--- /dev/null
+++ b/bin/korapclient
@@ -0,0 +1,2 @@
+#!/bin/sh
+/usr/bin/env python3 -m KorAPClient "$@"