article "Optimizing URL Structure for Multi-Device Sites"
hiding articles not complete
Fix issue #879
Minor edits for the intro

Came over to read up on touch-action. Thank you! Had a few suggestions for the intro paragraphs.
Merge pull request #882 from arthurevans/patch-1

Minor edits for the intro
Merge pull request #880 from jacquerie/issue-879

Fix issue #879
Merge pull request #874 from agektmr/discovery_and_distribution

Article "Optimizing URL Structure for Multi-Device Sites"
Typo fix: herf -> href
Merge pull request #881 from Rob--W/herf-href

Typo fix: herf -> href
new (good) photo
Reverting SHA: 8209697bd3087d9036fee22c8982ad7fe0842b46 from @greenido
Add information on how to install gulp

Added install instructions for gulp so that someone following these instructions can use the 'gulp serve' command
Fixing table for Ilya
Merge pull request #886 from lindaconnolly/patch-1

Add information on how to install gulp