Add libtool as requirement in Install instruction.
Add libtool as requirement in Install instruction.

armon/statsite,sleepybishop/statsite,sleepybishop/statsite,armon/statsite,statsite/statsite,statsite/statsite,johnkeates/statsite,armon/statsite,johnkeates/statsite,librato/statsite,librato/statsite,johnkeates/statsite,sleepybishop/statsite,armon/statsite,librato/statsite,sleepybishop/statsite,sleepybishop/statsite,statsite/statsite,librato/statsite,johnkeates/statsite,statsite/statsite,statsite/statsite,armon/statsite,johnkeates/statsite,librato/statsite,librato/statsite