Change 'berkshelf shelf uninstall' -> 'berks shelf uninstall'
Merge pull request #1293 from ameir/fix-uninstall-message

Change 'berkshelf shelf uninstall' -> 'berks shelf uninstall'
Fix `berks viz` when `pwd` contains spaces
Merge pull request #1294 from ameir/fix-berks-viz-with-spaces-in-path

Fix `berks viz` when `pwd` contains spaces
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Merge branch 'master' of https://github.com/berniedurfee/berkshelf