Merge pull request #60 from jaredwilkening/master

Usability update
Update README.md
missing auth section in example conf
shock client fix (download with index parts)
make Node definition in shock-client consistent with shock-server
shock-client add option pdownload: parallel downloading
shock-client multi-threading download:thread number as command argument; removing debug msg
add pdownload option to usage msg
Merge pull request #61 from wtangiit/master

shock-client add multi-threading downloading (shock-client pdownload <id>)
Merge branch 'master' of github.com:MG-RAST/Shock
go 1.1 format changes
ignore file update