Imports of tar-split command

PathSynopsis
archive/tarPackage tar implements access to tar archives.
compress/gzipPackage gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/Sirupsen/logrus
github.com/codegangsta/cli
github.com/vbatts/tar-split/tar/asmPackage asm provides the API for streaming assembly and disassembly of tar archives.
github.com/vbatts/tar-split/tar/storagePackage storage is for metadata of a tar archive.
ioPackage io provides basic interfaces to I/O primitives.
io/ioutilPackage ioutil implements some I/O utility functions.
logPackage log implements a simple logging package.
osPackage os provides a platform-independent interface to operating system functionality.