Merge pull request #8 from SunLn/fix2

fix some bug
fix price
Merge remote-tracking branch 'origin/feature/newdocs' into feature/newdocs
Added drawing tools and rules.
Merge pull request #10 from SunLn/fix2

img align center
fix CLI=>工具,fix docs/api/index.html=>docs/index.html
Merge remote-tracking branch 'origin/feature/newdocs' into feature/newdocs
Fixed colon issue in token-algorithm.
Drawing tools and rules.
Adjusted title levels.
Merge pull request #9 from hughlv/feature/fix_1

Added drawing tools and rules.
mv guide 2 tutorial
Merge remote-tracking branch 'origin/feature/newdocs' into feature/newdocs
Merge remote-tracking branch 'wm/feature/newdocs' into fix2