added bootstrap layout and figaro gem to general site configuration
added redcarpet pygmentize and simple_form gems
add to application_helpers render_markdown with pygmentize support
configured epiceditor for new/edit posts
added home controller, some bootstrap style and will_paginate gem
added rspec spec to replace tests
added other test for home controller
added some changes to views and added two helpers
default rails tests deleted
added acts_as_taggable_on and friendly_id gems for posts
added tags partial to sidebar
Changed all texts in views to I18n.t and added some rspect tests