rename SeoPresentationInterface::updateSeoPage

[dbu]

As discussed in https://github.com/symfony-cmf/SeoBundle/pull/263/files#r40062307 this method has a strange name. what we do is add seo information. the method should be called something like updateMetadata... this would be an interface change so we can only do it for 2.0

[benglass]

I probably should have put this comment here but I think use of the word Document is overly specific to PHPCR and this method can work for anything that implements the SeoMetadata interface. Other suggestions:

• updateSeoMetadataFrom($object) // this one gets my vote
• updateSeoMetadataFromObject($object)
• updateSeoMetadataFromContent($content) // content doesnt seem like the right name in this case

We could use SeoInformation instead of SeoMetadata in any of these names

[dbu]

• updateSeoMetadataFrom($object) // this one gets my vote

if we ever update it from something else, this would be odd. like
updateSeoMetadataFromEntityId or something. then again we can just go
with ...From() and all other cases have an explicit name. this is the
default case.

so +1 on this proposal

[dbu]

@benglass proposed updateMetadata() in #263. i like that one best.