Update change log with BundleOutdated hook

Author: sds

CHANGELOG.md

@@ -7,6 +7,8 @@
 * Fix `Jscs` pre-commit hook to work with `jscs` 3.0.0+
 * Fix `CapitalizedSubject` pre-commit hook to ignore commit message subjects
   starting with `fixup!` or `squash!` special prefixes
+* Add `BundleOutdated` pre-commit hook to report gems in the `Gemfile.lock`
+  that have newer versions available
 
 ## 0.33.0
 

lib/overcommit/hook/pre_commit/bundle_outdated.rb

@@ -1,7 +1,6 @@
 module Overcommit::Hook::PreCommit
-  # Check if local Gemfile.lock matches Gemfile when either changes, unless
-  # Gemfile.lock is ignored by git.
-  # Check outdated rubyGems
+  # Check if any gems in Gemfile.lock have newer versions, unless the
+  # Gemfile.lock is ignored by Git.
   #
   # @see http://bundler.io/bundle_outdated.html
   class BundleOutdated < Base