Blog post about the new features

[AcckiyGerman]

We added some new features during the Feb and March 2018. Let's write an article to show the progress to our users.

tasks

• [x] write an article
• [x] review
  • [x] fix
• [x] post

Acceptance criteria

• [x] the blog post is on the datahub.io site.

[AcckiyGerman]

FIXED: http://datahub.io/blog/new-datahub-features-and-improvements

The main feature described is the embeddable html tables and view, so this issue is Fixes https://github.com/datahq/pm/issues/125 as well.