Merge pull request #50 from rawcreative/master

Update utils.copyFile to preserve permissions
release 0.1.16
Fix example typo
Merge pull request #51 from vladikoff/typofix

Fix example typo
Use lodash module instead of grunt.util._

Because grunt.util._ is deprecated.
release 0.1.17
Update README.md

minor typo in comment
Merge pull request #66 from gion/patch-1

Update README.md
New official download URL of node-webkit
Merge pull request #68 from rogerwang/new-url

New official download URL of node-webkit
updated nw version
Release 0.1.18
Update README.md