fix `go get -d github.com/XiaoMi/soar` error

fix #44 empty itme when json report-type

  #47 pretty print function `format` endless loop
  #37 -report-type not in (markdown, html) will not print score

fix typo

add godoc badge

fix #12

fix #17 spell error

modify dsn config doc, fix #16 

  1. ARG.010 wrong case
  2. update gometalinter to 2.0.11 latest version

添加社区入口与公众号入口

fix #22 

soar now only support tcp protocol, change`hostname` to `ip` in doc

update REAME.md

修正https地址

修正https地址，使其正确跳转。

   1. update doc
   2. try to fix travis config error
   3. update vitess dep

fix document spell errors

  #5
    Go version large than 1.8 has default GOPATH.
    use `go env GOPATH` get GOPATH envirment variable.

  daily build update
    update vitess vendor package
    update document about installation and configration