Docs fix for Alert Box examples. Fixes #3664

The advanced examples for Alert Boxes were missing the data-alert
attribute in the example code
Update README.md
Modified FastClick initialization to delay until document ready.
Fixed spelling error
Fix sticky topbar typo.
Bump topbar version to 5.0.3
Merge pull request #3643 from seantimm/seantimm/issue-3643-fastclick-load

Foundation.js 5 MUST be included in BODY tag.
Bump core version to 5.0.3
Merge pull request #3675 from Shelob9/patch-1

Fixed spelling error
Merge pull request #3665 from dhodgin/issue3664

Docs fix for Alert Box examples. Fixes #3664
Add Opens Sans Opt-Out Comment to Settings
Fix modernizr path in docs

The corret path is vendor/modernizr as can be seen in foundation-rails gem:
https://github.com/zurb/foundation-rails/blob/master/vendor/assets/javascripts/vendor/modernizr.js

The path vendor/custom.modernizr gives the following error:
ActionController::RoutingError (No route matches [GET] "/javascripts/vendor/custom.modernizr.js"):
Merge pull request #3677 from fny/patch-2

Add Opens Sans Opt-Out Comment to Settings
Fix settings configuration for Reveal.
Merge branch 'master' of github.com:zurb/foundation
fix broken links
Merge branch 'master' of github.com:zurb/foundation
Bump Reveal version to 5.0.3
Remove log statement.
Merge pull request #3679 from leandrocp/master

Fix modernizr path in docs