or support without a session name

Author: tony

TODO

@@ -8,7 +8,8 @@ Immediate
 - prompt  filepath/filename choice before save
 - confirm and loop
 - fix import of blank panes teamocil tmuxinator
-- give a real session name if none exists
+- give a real session name if none exists or support building without
+  a session name
 
 - make prompt_bool Y/n by default
 - shorts for load