添加注释

this code is added annotations by leatherwang on 2018-3-17.

Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
Examples		Examples
Thirdparty		Thirdparty
cmake_modules		cmake_modules
include		include
src		src
CMakeLists.txt		CMakeLists.txt
CMakeLists.txt.user		CMakeLists.txt.user
CMakeLists.txt~		CMakeLists.txt~
Dependencies.md		Dependencies.md
KeyFrameTrajectory.txt		KeyFrameTrajectory.txt
LICENSE.txt		LICENSE.txt
License-gpl.txt		License-gpl.txt
README.md		README.md
README.md~		README.md~
build.sh		build.sh
build.sh~		build.sh~

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