added thin to gemfile, to replace webrick
removed 'require bundler/setup' in ruby file
removed thin gem from gemfile
specified Ruuby version in Gemfile
removed specified ruby version from gemfile
set views explicitly in ruby file
specifiy views directory in ruby file for production
missing a comma when specifying views directory
removed 'require sinatra' from ruby file; removed sinatra version from gemfile
added shotgon gem; removed specified ruby version
added heroku to gemfile
not sure I saved last time
removed shotgun gem
removed herogu gem from file
testing calculator file:
changing back to index view with get request
added Gemfile.lock to commit
added a page title in html
moved images out of 'image' subfolder
explicitly set templae directory to 'views'