restructured cache functions
permisson_readable
Merge branch 'master' of https://github.com/MG-RAST/Shock
add go-dockerclient
add go-dockerclient
Merge branch 'master' of https://github.com/MG-RAST/Shock
new perl shock client
first version of shock client
added some tests
added download
Merge pull request #160 from wgerlach/master

added functions to perl module and created new perl shock client script