Create health_inspection_data

Adding blog post draft for new post. Will add details later then submit pull request to main US ODI blog
Updated title and intro paragraph

Added title and intro paragrpah
Wrote paragraph on hdscores
Edited the piece

Added a concluding paragraph, made some changes for spelling, grammar,
and clarity, and fixed the YAML front matter.
Rename the file
Merge pull request #12 from opendata/pr/11

Add restaurant inspection data blog entry