Make Python-path configurable

This commit introduces a Makefile that needs to be run initially to
configure reclass for use on the local system, by setting the full path
to the Python interpreter.

Closes: #1
Signed-off-by: martin f. krafft <madduck@madduck.net>
diff --git a/.gitignore b/.gitignore
index 169396b..0d3807b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.pyc
 /reclass-config.yml
+/reclass.py