new article: control crawling and indexing from search engines
Merge pull request #1044 from jpmedley/master

Change 'terminal' to 'command prompt'. (It's a little less dated.)
Adding web app manifest and some images to illustrate certain points
Merge pull request #1049 from google/web-app-manifest

Adding web app manifest and some images to illustrate certain points in device access
Merge remote-tracking branch 'upstream/master' into discovery_and_distribution
tiny tweaks for discovery section
Merge pull request #1051 from agektmr/discovery_and_distribution

New Article: Control crawling and indexing from search engines
Adding in some of Joe's feedback
Adding some further tweaks from Joe and arthurvr
Tidied up the Gruntfile a bit to make it easier to follow
Merge pull request #1053 from wibblymat/grunt-cleanup

Tidied up the Gruntfile a bit to make it easier to follow