command lists so far:

• /new : add new user /new {user name} {height}
• /load : load user's data /load {user name}
• /write : write user's data /write {weight} {fat percentage} {time(optional)}
• /read : read user's data
• /update : update user's data /update height={user's height}
• /draw : draw saved data into linar diagram
• /help : show the help list

notes: write time format YYYY-MM-DD

notes: Windows users reccommmand to put this application into C:\user\ProgramFiles(x86) and Mac users can create a folder for this file(beacuse it will crate folders)