try to replace request.js to superagent

Signed-off-by: TZ <atian25@qq.com>
travis only at master

Signed-off-by: TZ <atian25@qq.com>
redirect support *

Signed-off-by: TZ <atian25@qq.com>
rename

Signed-off-by: TZ <atian25@qq.com>
add Rule class && modify handler params order && add tests

Signed-off-by: TZ <atian25@qq.com>
bump version to 0.0.8

Signed-off-by: TZ <atian25@qq.com>
modify Mocker to export factory function && bump to 0.0.9

Signed-off-by: TZ <atian25@qq.com>
update readme && mkdir when not exist

Signed-off-by: TZ <atian25@qq.com>
fixed bodyParser warning

Signed-off-by: TZ <atian25@qq.com>
add docs

Signed-off-by: TZ <atian25@qq.com>
push for help, superagent

Signed-off-by: TZ <atian25@qq.com>