make constructor more readable
add README.md
Merge pull request #1 from kingheaven/master

对项目结构进行了一些优化
git ignore .DS_Store
git rm .DS_Store
modify httphelper then we can detemine our http-headers easily
add login handler
nothing
add api-ver1.0 docs
fix json response. complete /chat part.
echo docs/API.md > README.md
add tools/links
fix few markdown errors
Merge pull request #1 from tclh123/master

 a lot of update.