fix lite doc

fix android demo

update the Readme.md and the joinus.png

pdserving remove OCRReader

update faq

fix max_wh_ratio for predict

Occitan corpus and character set

update infer library and doc for lite deploy

fix max_img_ratio for short text

fix tia exception

fix method name bug

since it named "release" in native.cpp

Add dict and corpus folder

pdserving fetch var fix

fix link in quickstart doc, test=document_fix

Update installation_en.md

Fix typos