Added figaro for easy setup of ENV[] variables both locally and on Heroku
https://github.com/laserlemon/figaro
This little file allows `rbenv` or `rvm` to use the correct ruby, without affecting which ruby is installed on the system. Make sure to update it alongside the version in the Gemfile.
Updated for Omniauth, with env-specific api keys.
Sort Podcasts by A-Z or Popularity (default).

* Popularity - based on number of users of Podweb that use it
* A-Z self explanatory

Introduces a new param, `:sort_by` which is stored in `@sort_by`
Merge pull request #1 from tobypinder/features/popular_feeds

Sort Library by popularity (as well as A-Z) [+]
Update display for sorting podcasts index

changed a to label with appropriate checking for sort status
add small amount of supporting css
remove unused css