Bootstrap Glyphicons copy task for grunt build.

gruntfile.js

copy: {
      dist: {
        files: [{
          expand: true,
          dot: true,
          cwd: '<%= yeoman.app %>',
          src: [
            // Jekyll processes and moves HTML and text files.
            // Usemin moves CSS and javascript inside of Usemin blocks.
            // Copy moves asset files and directories.
            'images/**/*',
            'fonts/**/*',
            // Like Jekyll, exclude files & folders prefixed with an underscore.
            '!**/_*{,/**}',
            '_bower_components/**/*'
            // Explicitly add any files your site needs for distribution here.
            //'_bower_components/jquery/jquery.js',
            //'favicon.ico',
            //'apple-touch*.png'
          ],
          dest: '<%= yeoman.dist %>'
        }, {
        expand: true,
        cwd: '<%= yeoman.app %>/_bower_components/bootstrap-sass-offical/vendor/assets/fonts/bootstrap',
        dest: '<%= yeoman.dist %>/fonts',
        src: '*.*'
        }]
      },