sudo shouldn't be necessary for local npm install
Merge pull request #494 from robations/patch-1

sudo shouldn't be necessary for local npm install
Update devtools.markdown

Link to iOS Safari Simulator didn't work. It added unnecessary characters due to line breaks in the link.
Merge pull request #500 from ParinParikh/patch-1

Update devtools.markdown
#502 - adding schema.org so it is visible on devsite
Merge branch 'master' of github.com:google/WebFundamentals
#502 - adding schema.org so it is visible on devsite
#502 - adding schema.org breadcrumb
Adds installation of kramdown to README.

Jekyll uses the kramdown gem for markdown compilation. Without it the
project won't build.
Merge pull request #508 from jbnicolai/add-krawmdown-to-readme

Adds installation of kramdown to README.