add reading_level, datetime, description, word count, author, and better keywords to articles. add pismo and lingua gems. remove metainspector
actually remove metainspector for this commit
Merge branch 'master' into add_article_attrs

Conflicts:
	app/models/article.rb
	db/schema.rb
fix merge conflicts
set word_count ranges
merge master, passing tests
test article_scraper.rb
remove metainspector keywords method
Merge pull request #38 from mule-deer-2013/add_article_attrs

Add article attrs