Use correct ordering in installation instructions
Merge pull request #421 from umaar/install-fix

Use correct ordering in installation instructions
bump gulp-autoprefixer
gulpfile - fix indentation
bump dependencies
Output some error when require-dir tasks fails

It could be useful to see the results of the require tasks especially if there is an error.
Merge pull request #426 from alexanderchan/patch-1

Output some error when require-dir tasks fails
Fixes #441 - add custom logPrefix for BrowserSync
gulpfile - add `logPrefix` to the other browserSync instance

and single-quotes
Update dependencies
Merge pull request #455 from google/update-deps

Update dependencies
Adding navigation menu to styleguide