modified:   package.json
	modified:   tasks/chrome-manifest.js
Test code added by @tvanier, For https://github.com/ragingwind/grunt-chrome-manifest/pull/7 Issue

PR: https://github.com/tvanier/grunt-chrome-manifest/commit/a9de9be2f5c98e9cede2173b1257d6ad66e69da3
Remove useless task for execlude
Refactoring testcase
Update buildnumber option
Update readme
Merge pull request #9 from ragingwind/0.1.3

0.1.3