fetch testsets for os_version
fix attributes/utilities for os_version
fix for os_version of windows
fix for os_version of OSX, FreeBSD and Chrome OS
fix for os_version of iOS
fix for os_version of Android
fix for os_version of Windows Phone, Firefox tablet and BlackBerry
fix for os_version of playstation
regenerate with os_version
add documents for os_version
v1.0.0