Added all appropriate sanity checks for cli
Added some boilerplates for backup exchanger
Initial support for backup exchange
Bundle and index exchange is under development yet
Index support for backup exchange
Initial bundle support for backup exchange
Adler32 calculation for destination is in development
Bundle support for backup exchange
Adler32 calculation fixed
Slight refactoring
Merge pull request #17 from Am1GO/BackupExchangerInitialImplementation

Backup exchanger initial implementation