new func: dumb_dir_copy
Update README to reflect recent changes to code.
Document the alternative functions some of which have been replaced by more
adecuate solutions on fabfile.py or in the same file. Schedule for removal of
old functions.
Fixing punctuation on dumb_dir_copy docstring.
Allowing usernames others than "admin" or "Root" for login credentials.
New function to check if a var is a number. Used in alt_fabfile.py