Blog post about data carpentry workshop
Updating blog post about Data Carpentry
Integrate offline edits to data carpentry blog posts

Combined edits from Hilmar Lapp, Karen Cranston, Tracy  Teal,
and Ethan White.
Add data carpentry helper acknowledgement
Merge pull request #7 from ethanwhite/blog-data-carpentry-workshop

Integrate offline changes into data carpentry blog post
Merging Ethan White's changes
Merge branch 'master' into blog-data-carpentry-workshop