Merge pull request #5 from wiggzz/devel

Lots of changes including restart capability, token specification, multiple chunks request
Merge pull request #6 from wiggzz/devel

Some small changes to restoration logic and default url
modified some imports to work with py2exe
Merge branch 'devel' of github.com:storj/downstream-farmer into devel
pep8
added py2exe
removed py2exe for travis-ci compatibility...