lib/bower.js
function copyORIGINALToBowerJson(){
        if (grunt.file.exists(ORIGINALFileName)){
            grunt.file.copy(ORIGINALFileName, 'bower.json');
          grunt.file.delete(ORIGINALFileName);
        }
    }
function copyORIGINALToBowerJson(){
        if (grunt.file.exists(ORIGINALFileName)){
            grunt.file.copy(ORIGINALFileName, 'bower.json');
          grunt.file.delete(ORIGINALFileName);
        }
    }
File name for saving original vesion of bower.json 
copyORIGINALToBowerJson: copy _ORIGINAL_bower.json -> bower.json