Simply builds and verifies OAuth headers

 The library, "simple_oauth", provides classes in order to simply build
 and verify OAuth headers.
 .
 This library aims to support and is tested against the following Ruby
 implementations:
    Ruby 1.8.7
    Ruby 1.9.3
    Ruby 2.0.0
    Ruby 2.1
    JRuby
    Rubinius
 .
 If something doesn't work on one of these interpreters, it's a bug.