update default.html
update css files for: bubble effect
update _config.yml file
adding author.twitter, author.github
modifie site.title
etc.
update two template html files: .../default.html & .../post.html for bubble effect
default.html: add a 'canvas' element into '#canvas-header'.setting their positions for normal layout.
post.html: update navigation layout with just "previous" & "next" options.
new 3 js files for bubble effects
.../alphabet.js, copied from :"http://s3.amazonaws.com/codecademy-content/courses/hour-of-code/js/alphabet.js"
.../bubbles.js, copied from : "http://s3.amazonaws.com/codecademy-content/courses/hour-of-code/js/bubbles.js"
install theme:the-program.But not switching