dev 1
change target framework to 4.0
fix distance
Merge pull request #1 from xnzaa/temp_dev

交通科技大赛 内赛 最新版
small fix
Merge pull request #2 from xnzaa/temp_dev

small fix
fix some comments
fix: you
fix some comments
Merge pull request #5 from xnzaa/navi

fix comments
delete app.config
Merge pull request #21 from xnzaa/master

fix all comments