Update LAC v2.1 models

models_general.zip: LAC2.1 model (only work on Python currently)

Release V2.0 models and paddle library

lac_demo.apk: LAC test demo of Android
models_android.zip: LAC model for Android
models_general.zip: LAC model for C++、JAVA and Python
paddle_library_mac.zip: Paddle library for MacOS
lac4javawin.zip: LAC jni library for Windows

First Release.

This is the first release of LAC, with a RNN model that conducts word segmentation, part-of-speech tagging and named entity recognition jointly.
Hope it is helpful for the NLP community.