@rakuco @wang16 @yongsheng  suggest we set the version style as follows
e.g.

https://download.01.org/crosswalk/releases/android/canary/
v1.0
     crosswalk-1.29.3.0.zip
     crosswalk-1.29.5.0.zip
     crosswalk-1.29.6.0.zip
     LATEST
LATEST
---------------------------------------------------------
when open the link:
https://download.01.org/crosswalk/releases/android/canary/LATEST
        the web page shows: 1.0

when open the link:
https://download.01.org/crosswalk/releases/android/canary/v1.0/LATEST
        the web page shows: 1.29.6.0

in Linux kernel org, there is also "latest" to indicate the latest version number.