Merge pull request HIT-SCIR#220 from HIT-SCIR/develop

merge from branch `Develop` to `master`. SRL LSTM-model and fix memory leak.

update readme

Update appveyor.yml

try more complex compile matrix

update readme

Merge branch 'master' of https://github.com/HIT-SCIR/ltp

Merge branch 'customized-cws'

Merge branch 'ltp-mingw-portable'

.

revise ChangeLog.md

Merge branch 'master' of github.com:HIT-SCIR/ltp