Merge pull request #35 from atax1a/master

smooth out some rough edges
minor clarification in Ch.6
Merge pull request #37 from atax1a/master

parentheticals
Merge pull request #38 from atax1a/master

fix name
continuity breach instructions added
brew doesn't need or want sudo
Some changes, etc.
Merge branch 'master' of github.com:urbit/urbit.github.io
New continuity breach.
Fix a language change introduced bug.
Remove trailing text.
Proposed additional edits corresponding to C. Guy's recent change (93ac52b).
Merge pull request #41 from ngvrnd/master

Proposed additional edits corresponding to C. Guy's recent change (93ac5...