Resolve "Argument syntax does not follow the traditional style"

Closes #5 (closed)

allows all multicharacter arguments to be specified as either --name or -name incidentally fixes an issue where invalid arguments often caused segfaults, now it prints "Invalid arguments" in red and then the help.

The help is so long now that it may make more sense to just print "Invalid arguments, try --help" so that the user actually sees the message.