add beteter sauce/session name reporting
update intern to 1.7

add sauce/session name reporting
Merge branch 'lbod-sauce-sessionname'

Sauce session name added, upgrade to intern 1.7 (thanks @lbod)
SauceLab tests are now running on iOS 7 platforms.
revert to intern 1.6
Add YAML header to documentation files.
Add and document CSS contraints for children of LinearLayout. Update LinearLayout samples.