Use Figaro to config ENV.
Merge pull request #34 from linjunpop/figaro

Use Figaro to config ENV.
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update application config
update gems

and fix test cases

1. remove assign_to() matcher
2. use firefox for cucumber testing
fix style bug in mobile version
update ENV config
fix layout issue for wide tablet
use Figaro to read ENV variables
add username/password auth for memcached
fix Figaro calling problem

should use `Figaro.env.FOO`, instead of `Figaro.env['FOO']`
fix uploaded image width problem

auto scaling image based on container size
tweak configuration
increase nginx server_names_hash_bucket_size
paginate empty dataset for active cache

fix #37
add CentOS 6.4 autoconf script
use bootstrap-sass to replace less-rails-bootstrap gem
clean up css files
rewrite i_theme to SCSS
rename heroku deploy script