Add linebreaks between commander setup calls

This modification isolates wordage onto their own lines.
Improve description of `--exec` option
Improve description of `init` command
Improve description of `release` command
Use "Would have ..." for dry-run messages
Improve wording in CheckChangeLog step
Improve wording in Commit step
Improve wording in FindVersion step
Make dry-run message for Commit step more readable
Improve wording in lib/ShipIt.js
Improve README
Merge pull request #4 from execjosh/improve-wording

Improve Wording