add html.rb files for Sections, got them functioning
add routes for Lessons
add route, controller, index page for table of contents
add RESTful methods to Lessons Controller
add view pages for Lessons
add nav bar to homepage, started connecting lesson to section
complete homepage listing table of contents and nav bar to link to section and lesson homepages
add partial for errors
add partial for section form
add partial for form on lesson new and edit
add README to the project