Update JS Bin template in CONTRIBUTING.md

[hnrch02]

Refs: #14109

Link: http://jsbin.com/zazif/1/edit?html,output

That bin still refers to https://github.com/necolas/issue-guidelines for bug reporting guidelines, is that still valid?

Also, I switched to using a CDN for the Bootstrap files, as @cvrebert mentioned a couple of times that we don't endorse hotlinking to getbootstrap.com
The reason why I chose jsDelivr over BootstrapCDN is that they actually have a up-to-date /latest/ version. (See jsDelivr and BootstrapCDN.)

/cc @cvrebert

[juthilo]

/cc @jdorfman about BootstrapCDN's /latest/ being out of date.

[hnrch02]

It's only for .min files though.

[cvrebert]

@youngtaek I really hate you and your email provider right now..

[hnrch02]

@cvrebert It's not only you...

[cvrebert]

To make debugging easier, it's probably better not to use the minified code.

[hnrch02]

The updated template I posted uses the unminified files.

[jdorfman]

@juthilo fixing now.

[jdorfman]

@juthilo @hnrch02 CDN Cache Purged. Sorry for the oversight.

[juthilo]

@jdorfman No worries, thanks for the quick fix!
@hnrch02 You can now use http://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.css ;)

[cvrebert]

The current bug report guidelines are at https://github.com/twbs/bootstrap/blob/master/CONTRIBUTING.md#bug-reports

[cvrebert]

Also, the bin is missing the viewport meta tag and the X-UA-Compatible meta tag.

[cvrebert]

It might be worth considering including the IE10 viewport hack too:
https://github.com/twbs/bootstrap/blob/master/docs/assets/js/ie10-viewport-bug-workaround.js

[hnrch02]

Then we'd also need to include the HTML5 shim and Respond.js.

[cvrebert]

🤘 Good catch. It should really be based upon the basic getting started template.

[hnrch02]

Bad news, the validation fails for the X-UA-Compatible meta tag.

[cvrebert]

@hnrch02 It's being overly pedantic, just ignore that. LMVTFY specifically allows X-UA-Compatible.

[hnrch02]

Mkay, will update the PR.

[hnrch02]

Should I include the IE10 viewport bug workaround?

[mdo]

For the example:

• Add <meta http-equiv="X-UA-Compatible" content="IE=edge">
• Add <meta name="viewport" content="width=device-width, initial-scale=1">
• Don't bother with the IE10 viewport thing

Once set, then we can merge.

[hnrch02]

@mdo How about this Bin?

[mdo]

Looks good.

[hnrch02]

Okay, done.