Function mv 

pub fn mv(path_one: &str, path_two: &str) -> bool

Moves a file from path_one to path_two and returns a boolean based on success or failure.

Usage:

fsutils::mkdir("directory_one");
fsutils::mkdir("directory_two");
fsutils::create_file("directory_one/the_file");

assert_eq!(fsutils::mv("directory_one/the_file", "directory_two/the_file"), true);