Add /qe endpoint for Base64 encoding urls
/qe/ decoding no longer relies on Base64.urlsafe_decode64 which is not available in ruby 1.8.7
Fix the test suite to not rely on Base64.urlsafe_encode64
Update README to clarify that the Encoded Syntax is an extension of the path-based syntax
Merge branch 'master' into encoded

* master:
  Add Rack::Cache with filesystem-based storage when running as an app
  Remove reference to cedar branch from the README
Fix the test suite for 1.8.7
pack("m0") seems to include newlines in ruby 1.8 but does not in either the
javascript btoa() function or in pack("m0") in 1.9 so we're just stripping
the newlines in the test encoded path to mirror this behavior.
Merge pull request #19 from jcn/encoded

Add /qe endpoint for Base64 encoding urls