grunt-sync-pkg 
Minimalist Grunt plugin to keep package.json and bower.json synchronized
By default, this plugin syncs the following properties from package.json to bower.json:
nameversionmain
Note that if a bower.json file does not exist, the plugin creates on first. There is no option to turn this off, since there is no reason to use the plugin if you aren't syncing with anything :-).
Getting Started
If you haven't used grunt before, be sure to check out the Getting Started guide.
From the same directory as your project's Gruntfile and package.json, install this plugin with the following command:
npm install grunt-sync-pkg --save-devOnce that's done, add this line to your project's Gruntfile:
grunt;If the plugin has been installed correctly, you should now be able to run grunt sync at the command line to run the sync task.
Options
include
Type: Array
Default: ['name', 'version', 'main']
Properties to sync from package.json to bower.json.
exclude
Type: Array
Default: undefined
Properties to exclude from syncing.
alt
Type: Obj
Default: undefined
Specify an additional JSON file to sync, such as myplugin.jquery.json.
Contributing
In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using grunt.
Author
Jon Schlinkert
Copyright and License
Copyright (c) 2013 Jon Schlinkert Released under the MIT License.