Update css bootstrap links in examples

[Minisai]

No description provided.

[Dervisevic]

That's good, i would prefer it if you kept the // instead of https:// as getting the files can take up to 5x as long, and that's not necessary when surfing without SSL. If you disagree, please do tell.

[Minisai]

@Dervisevic Thank you for the remark! I've updated the PR. Protocol-related urls is good solution, but if you open file locally, browser would prefix it with "file://" protocol. As I understand these examples were created mostly for use on github pages, but at the same time I haven't found custom-validators page there?

[stramel]

@Minisai It looks like the custom-validators page was just created within the past week. I'm sure @davidlgj or @Dervisevic will get it up on the website soon. They currently just have a link to the example in the ngModelController section

I agree for protocol-less URLs 👍

[davidlgj]

@Minisai we should probably add some server to the gulpfile to make it easier to test out the examples. I usually use http-server or puer. The examples also play a second role to ease manual testing.