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
Fixed error when a config for "step" is missing
Checking in changes prior to tagging version "0.2.2".

Changelog diff:

diff --git a/History.md b/History.md
index e7086ee..d42d1bb 100755
--- a/History.md
+++ b/History.md
@@ -1,12 +1,18 @@
 # Revision history for shipitjs

-0.2.1  / 2013-04-16
+0.2.2 / 2013-05-24
+==================
+
+  * Improved wording (Thanks to execjosh)
+  * Fixed error when step configuration is missing
+
+0.2.1 / 2013-04-16
 ===================

   * Fixed git repository URL in package.json
   * Fixed typo in README

-0.2.0  / 2013-04-15
+0.2.0 / 2013-04-15
 ===================

   * Support versioning from pacakge.ls (clkao)