Fixed socket writeFrom

Fixed socket writeFrom
Merge branch 'master' of https://github.com/dereklmc/ftp-client
Merge branch 'master' of https://github.com/dereklmc/ftp-client
Corrected time calculation for get command
Added 421 error check
added waitpid() to PutCmd, it was already in GetCmd.
Updated help
Merge branch 'master' of github.com:dereklmc/ftp-client

Conflicts:
	ftp.cpp
Comments

Conflicts:
	ftp.cpp
Merge
Comments.
cleanup