reply to post with reasonable host
add bucket in post reply
Adding support for Etag comparison during GET request method.
Adding support for If-None-Match: * and If-Modified-Since
Changing || to `or` for Ruby style.
support for storing & retrieving custom metadata

This commit adds support and a test for storing and retrieving
custom metadata for S3 objects, as documented at:

    http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html
Documentation Updates
Version Bump
Gemfile Version Bump
Add command line options to run an HTTPS server
no need to initialize ssl options to nil before setting them
use Kernel.abort instead of puts and exit
Add homepage and license to gemspec

Fixes issue #72
Adding the unit tests for the If-Modified-Since and If-None-Match headers for client-side caching.
Changed the If-Modified-Since to be a >= comparison, rather than a != comparison
Weird the editor changed whitespace.