Fix ecomfe/edp#129
Update testcase
ecomfe/edp#166
Enable test/less.spec.js
bump to 0.5.0
Merge branch 'master' of github.com:ecomfe/edp-webserver into refactor
修改route的bug

1. 增加处理location是function的情况
2. start函数返回server对象

ISSUE=refactor