Merge pull request #9 from orangle/patch-1

Update profiling.md

fix typo

fox another typo

fix typo

调整压力测试方案，使用wrk来测试

reduce lru incr instead with hmincr method, which can enhance the performance of 10%

Merge pull request #6 from spacewander/change_quote_format

Change format to work around with quote style

add test cases for /status

fix ambiguity

fix typo

add unit tests

begin to add test cases for /status

the first summary test case. TODO: json parser needed in test::nginx