Fixed Grunt::Copy task.
Updated Grunt & devDependencies

* grunt v0.4.2
* grunt-contrib-imagemin v0.4.0
* grunt-contrib-jshint v0.7.2
* grunt-contrib-less v0.8.2
* grunt-contrib-uglify v0.2.7
* grunt-svgmin v0.3.0
New grunt updates generated updated files.