Ensure newline at end of output

We were stripping the newlines off the end of the output.  
Merge pull request #5 from bitwiseman/patch-1

Ensure newline at end of output
Add new line at the end of file
converted into multi task
Updated to fit new version of js-beautify
Merge pull request #8 from Bartvds/master

Modified grunt-jsbeautifier to work as a multi-task
Merge pull request #9 from mitermayer/updating-js-beautify-dep

Updated to fit new version of js-beautify
Version 0.1.7
Upgraded grunt to ~0.4.1, js-beautify to ~1.2.0. Fixed issues6, 7, 8, 9
No longer re-writes unchanged files.
updated version of jsbeautifier and updated node package version
Merge pull request #10 from davdiv/checkChanges

No longer re-writes unchanged files.
Merge pull request #12 from mitermayer/jsbeautifier1.3.1

updated version of jsbeautifier and updated node package version
Update README.md
Upgrade js-beautify to ~1.4.0

Fixes indentation issue with ~1.3.1.
Merge pull request #13 from lukasreinfurt/master

Upgrade js-beautify to ~1.4.0.
Upgraded js-beautify to (fixed version) 1.4.0
Add verify_beautification option to fail when file
hasn't been beautified instead of mutating the file in place
Added mode option. Upgraded to version 0.1.10