Update readme feature

Modify inference lib link

modify the inference lib link

* modify annotation stript path

using 'cpplint --filter=-build/include_subdir,-build/c++11' to check cpp code style of all *.h, *.cpp

add copyright

Add mechanical meter to contrib

update linux_build.md and CMakeLists.txt

pull before pr

* fix bug

track official

2. add the description of  deployment based on cpu

* modify pspnet cityscapes iou

* add loss check

1. Fix the bug which original height and width are in wrong order when using analysis mode to infer.
2. Add the resize step when visualizing the segment inference result.
3. Polish the document of README.md, linux_build.md and vis.md, describe more details specifically.