Fix #225 fix route match error

Fix js plugin not effective

update readme

disable the JS plugin by default

Merge pull request #132 from caozhipan/fix-activeQPS-zero

setDeadLine & retry

dev: add option for setting host

fix: x-forwarded-for header

Merge pull request #120 from domgoer/master

fix: use unsupported loadbalance will cause nil pointer

fix: missing header when copying request

fix: caching deadline duration