Updated the readme with further instructions

on how to configure and run the tests against a local dev-build instance.
Update readme.md
created a table of contents
handle empty criteo value
Logic tipdy of sentimental comments
No decimal margins
add GraphicsMagick
order files by height
format file
Adding new flexible container
fixing video preroll clickbox
css ordering
split ophan audio tracking from video
updated videojs playlist
fix compilation; send 'media' to ophan
Adding news container with no images on standard items A/B test
control bar above vast blocker
Update target audience size
Add All Bestsellers to Agent

Instead of just taking the top 5 from each list
we now keep all the books in each list.
This means that we can look up more ISBNs
for the Inline Merchandising slot.
Soon we won't be looking up ISBNs in the bestsellers feed in this way.
adding audio events