replaced book charts with charts generated by the app
replaced all book charts with app-generated charts
minor book text edit
new sitemap.xml file & .gitignore
added rich snippets to blog posts
meta tags and rich snippets to improve website SEO
adding liquid description to header.html for SEO
fixed bug in twitter cards
twitter card is broke...potential fix
rich snippets
new includes
new layout for book page
updated link  text in book sections
changed layout of the-cycle.html & updated nav links
updated logo color
updated app page & added help.html
new photo
added script to keep copyright year up-to-date
merge.
added categories to blog