Link against pthread

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Add worker handling to the server

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Document the public interface of the TrafficServer

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Document the commandline parser

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Add commandline args for storage type

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Fix unittests

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Add unittests for the storage_type option

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
Update README with storage type option

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>