Update package.json

 - add murmurhash3 (0.1.4)
 - add mkdirp (0.3.4)
 - add synchonize (0.5.2)
Ajout de conf.js pour la config client

"conf.http.host" : url racine de dploy-it (default "///")
Change app startup and add config files

 - startup : read conf file and check/create path
 - conf : add upload, unzip & data paths + http port
Refactor upload handling out of upload route.