Tune verbosity of pkg

Changelog for 0.9.3:

• PR #242 Ignore error from reading stdin in unit test by @alexellis
• PR #229 Fixes #228 support downloading into a folder with a space by @amalkh5

Commits
629c0bc Make GetClientArch silent on command line by @alexellis
bda94d0 Update examples and list multi-master as a feature by @alexellis
4c110e6 Update README for about author by @alexellis
002ca83 Add post by Eamon by @alexellis
f677605 Ignore error from reading stdin in unit test by @alexellis
dbfada9 Fix missed err by @alexellis
64da658 Add new k3sup post by @alexellis
e462d27 support downloading into a folder with a space by @amalkh5
8d19951 Update Slack channel in Derek's message by @alexellis

Generated by Derek