handle file doest not exist error and listing one file for gluster_ls ; replace local variables with instance variables
add error codes for Mounter ; implement more instance variables
move file evaluation to a separate Evaluator class ; use getsize() for file reading in gluster_cp.py
updated shebang to /usr/bin/python so scripts can be self-executable
gluster_ls.py accepts multiple arguments and displays the output of each argument correctly