add plugin localization doc
doc update
@mmcc updated the hide/show functions to use a class instead of inline styles. closes #1681
Warning for previously updated players; doc update
Updated #1730 to use the ready function instead of warning.
Added a line to the changelog for #1730.
closes #1730
@anhskohbo added a Vietnamese translation. closes #1734
@Sxmanek added a Czech translation. closes #1739
Add vjs-scrubbing class to player while scrubbing
Prevent menus from opening while scrubbing
Added a line to the changelog for #1741
Merge pull request #1747 from thijstriemstra/master

Add plugin localization doc
@dmlap fixed URL parsing in IE9. closes #1765
Merge branch 'master' into tt-with-style
Check presence of vjs-hidden class