Fix deprications: s/Config/RbConfig/ and s/.stub!/.stub/
Remove notification when the bundle is already up to date

Eliminate the minor interruption of notifying the dev when nothing has changed. Leave the UI message in place.
`bundle check` does more than just check the bundle -- it can update Gemfile.lock

After a modification to 'Gemfile', guard-bundler would sometimes report 'Bundle already up-to-date' when it in fact the bundle was not up to date. It turns out that the 'bundle check' command updates 'Gemfile.lock' and returns with success when all dependencies can be met by using locally installed gems.

This PR refactors the #bundle_refresh method to handle this additional behavior of the 'bundle check' command. Tests are updated to accomodate these changes.
Fix grammar in Guardfile template.
Update .travis.yml - allow failures on ruby-head
Merge pull request #13 from cablegram/fix-deprications

Fix deprications: s/Config/RbConfig/ and s/.stub!/.stub/
Merge branch 'no-notification-when-up-to-date' of git://github.com/cablegram/guard-bundler into cablegram-no-notification-when-up-to-date

Conflicts:
	spec/guard/bundler_spec.rb
Merge branch 'handle-bundle-check-local-gem-installs' of git://github.com/cablegram/guard-bundler into cablegram-handle-bundle-check-local-gem-installs

Conflicts:
	lib/guard/bundler.rb
	spec/guard/bundler_spec.rb
Fix spec
Update Gemfile, gemspec and Travis config file
Add badges & Coverall
Merge pull request #16 from Gaelan/patch-1

Fix grammar in Guardfile template.
Merge branch 'travis-allow-ruby-head-failures' of git://github.com/cablegram/guard-bundler into cablegram-travis-allow-ruby-head-failures

Conflicts:
	.travis.yml
Merge branch 'master' of github.com:guard/guard-bundler