support FULLTEXT INDEX syntax

  1. remove Index_Comment in ShowIndex function
  2. remove mysql client deps in Makefile

  1. update vendor pingcap/parser
  2. Makefile add docker contain stop wait
  3. -report-type=rewrite when syntax error, print error info not empty

  RES.009 not consider about "and", "or"... Operator in
  BinaryOperationExpr

  column.Tp may be nil when checking

a new config arg 'min-cardinality' for index column selection

  chardet will detect input sql charset

  1. Makefile add `daily-quick` let test more fast
  2. Heuristic rule word lint
  3. FUN.001 add more logic, unstable now

  http://tech.dianwoda.com/2017/12/14/mysql-updateyu-ju-ge-jing-dian-de-keng/?hmsr=toutiao.io&utm_medium=toutiao.io&utm_source=toutiao.io

  1. etc/soar.blacklist add `use ?`
  2. blacklist use os.Getwd prefix
  3. update doc

  1. update vitess dependency
  2. explain database prefix check

  1. fix -config arg parse bug
  2. code & comment lint

  1. SplitStatement mulitstatement eof bug
  2. empty query by pass

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

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

  #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