title should be available as a tag, not just an attribute

[davesmith00047]

Hi,

There are several previous issues closed against this, but I think this is still an issue, as it is a usability stumbling block.

It took me a long time to work out that the title tag had to be accessed as scalatags.Text.tags2.title. I was just doing tag("title")("My Page") for quite a while because I couldn't understand what to do. In the end I found the closed issues, read the source and got the answer that way.