fix gulp unable to build
Merge pull request #27 from matiit/develop

fix gulp unable to build
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Update README.md
Revert app.less
Improve the taskrunner documentation
Add a link to the npm installer.
Improve install.md
Update CONTRIBUTING.md
Update README.md
Update CONTRIBUTING.md
Update CONTRIBUTING.md
Merge branch 'release/0.0.6' into develop
Merge branch 'develop' into feature/captcha