add initial sftp support
implement io.ReadAll for older go versions
fix illegal seek on Stdin
fix multiconnection bug
update dependencies and add more spacing in main.go
update readme with paste.nilsu.org information
add error message if missing environment variable
implement environment variable configuration

pcf is now configured with an environment variable PCFSERVER. I updated
to readme and man page to explain how to use this variable.
remove config for stdin_name

Having this configurable in the first place was silly since the file is
renamed as soon as it's uploaded. There's literally no point in ever
changing this.
exit on error when failing to read file

This patch makes pcf exit with a 1 if it fails to read any input. It was
already printing an error message so this makes sense.
increment version, update dependencies
pass base name instead of full path when storing file

This closes issue #2
Previously the full path was passed when uploading a file over ftp,
which on several ftp servers, caused the file to be rejeced. This patch
causes the file to use the base name instead.
add issue tracker and mailing list to readme
remove unused max variable
Change placeholder manpage into functional manpage