Created blog post for Snowplow 0.9.9 release
Added section on new JSON paths and Redshift DDLs
Tweaks
Removed trailing comma
Merge branch 'posts/fred-snowplow-0.9.9' of https://github.com/snowplow/snowplow.github.com into posts/fred-snowplow-0.9.9

Conflicts:
	_posts/2014-xx-xx-snowplow-0.9.9-released-with-campaign-attribution-enrichment.md