Support for content-for

[martinbottanek]

It would be great if we could push meta tags to a {{content-for 'meta'}} helper, not just append them at the bottom of head

[ronco]

Thanks for the issue @martinbottanek. I have been thinking about how content-for support could work in with this. Out of curiosity what's your use case for targeting a specific location in the head tag?

With this is we could bring in support for static meta tags that ember-cli would add when constructing index.html. Then continue to dynamically set additional tags on transitions.