pixarfilms v0.2.0

• Add vignette for Pixar film ratings
• Add to suggested packages for vignettes
• Update to HTTPS for README badges
• Rename rating to film_rating to be more clear on meaning
• Update test data based on recent data updates
• Re-knit README for updated data
• Update awards for Soul and Onward
• Update people involved in films
• Add film run times and movie ratings to pixar_films data
• Add {stringr} library to raw data processing