let's make singularity python coincide with singularity version

Author: vsoch

singularity/version.py

@@ -22,7 +22,7 @@
 SOFTWARE.
 '''
 
-__version__ = "1.2.1"
+__version__ = "2.4.1"
 AUTHOR = 'Vanessa Sochat'
 AUTHOR_EMAIL = 'vsochat@stanford.edu'
 NAME = 'singularity'