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

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.