grunt-releaseでversionを上げられる男になろう ref: http://qiita.com/fnobi/items/5f194c83d51fdd7263eb

file0.txt

npm install --save-dev grunt-release

file1.txt

module.exports = function(grunt) {
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        release: {
            // おおむね、デフォルトの設定で問題ないです
            options: { } 
        }
    });

    grunt.loadNpmTasks('grunt-release');
    grunt.registerTask('default', ['release:patch']);
};

file2.txt

module.exports = function(grunt) {
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        release: {
            options: {
                // 設定ファイルとしてbower.jsonを指定
                file: 'bower.json', 
                // npm publishは実行しない
                npm: false
            }
        }
    });

    grunt.loadNpmTasks('grunt-release');
    grunt.registerTask('default', ['release:patch']);
};

file3.txt

grunt release:major

file4.txt

grunt release:minor

file5.txt

grunt release:patch

file6.txt

grunt release:prerelease

file7.txt

% grunt release:prerelease -v --no-write

Running tasks: release:prerelease

Running "release:prerelease" (release) task
Reading bower.json...OK
Parsing bower.json...OK
Not actually writing bower.json...OK
>> Version bumped to 0.0.2-0
Not actually running: git add bower.json
Not actually running: git commit bower.json -m "release 0.0.2-0"
>> bower.json committed
Not actually running: git tag 0.0.2-0 -m "version 0.0.2-0"
>> New git tag created: 0.0.2-0
Not actually running: git push
>> pushed to remote
Not actually running: git push --tags
>> pushed new tag 0.0.2-0 to remote