$ sudo npm -g update volo
npm WARN package.json vo...@0.2.10 No repository field.
npm WARN package.json datef...@1.0.2-1.2.3 No repository field.
npm WARN package.json evente...@0.4.11 'repositories' (plural) Not supported.
npm WARN package.json Please pick one as the 'repository' field
npm WARN package.json alm...@0.2.5 No repository field.
npm WARN package.json requ...@2.1.4 No repository field.
npm WARN package.json bo...@0.3.2 No repository field.
npm WARN package.json faye-we...@0.4.4 No repository field.
npm WARN package.json faye-we...@0.4.4 'repositories' (plural) Not supported.
npm WARN package.json Please pick one as the 'repository' field
npm WARN package.json requ...@2.0.6 No repository field.
npm WARN package.json jsh...@0.7.3 No repository field.
npm WARN package.json vo...@0.6.4 No repository field.
npm WARN package.json formi...@1.0.9 No repository field.
npm WARN package.json cheerio...@0.0.3 No repository field.
npm WARN package.json gr...@1.7.0 No repository field.
npm WARN package.json ey...@0.1.8 No repository field.
npm WARN package.json ct...@0.5.2 No repository field.
npm WARN package.json asser...@0.1.2 No repository field.
npm WARN package.json github-ur...@1.1.1 No repository field.