avocado/version.py: Turn it into an executable

Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

avocado/version.py

+#!/usr/bin/python
 __all__ = ['MAJOR', 'MINOR', 'RELEASE', 'VERSION']
 
 
@@ -6,3 +7,6 @@ MINOR = 0
 RELEASE = 1
 
 VERSION = "%s.%s.%s" % (MAJOR, MINOR, RELEASE)
+
+if __name__ == '__main__':
+    print VERSION