change position of lanchrock
delete video
css style
change title, product, description, counters
add product:Guqin
change statistics
change head, add lanchrock
add a guqin pic
add introduction
add faq
add a youtube video
add alt and <div class="row-fluid">
Merge branches 'develop' and 'staging' into staging
Merge branches 'staging' and 'master'