DataFile.copyFrom(URL)

WAY-73
Merge pull request #3 in WAY/way-base from WAY-73-datafile-url-get to master

* commit '28e21031a0e96b2efe12c94155e394866b04d0ad':
  DataFile.copyFrom(URL)
Merge branch 'master' of ssh://rio.objectos.com.br:7999/way/way-base