markdown for README and added cc0 license

Author: edsu

README README.mdREADME renamed to README.md

@@ -1,48 +1,61 @@
-= ruby-oai
-
-== DESCRIPTION
-
-ruby-oai is a Open Archives Protocol for Metadata Harvesting (OAI-PMH[http://openarchives.org]) 
-library for Ruby. If you're not familiar with OAI-PMH[http://openarchives.org] it is the most used 
-protocol for sharing metadata between digital library repositories.
-
-The OAI-PMH[http://openarchives.org] spec defines six verbs (Identify, ListIdentifiers, ListRecords, 
+```            _                             _ 
+ _ __ _   _| |__  _   _        ___   __ _(_)
+| '__| | | | '_ \| | | |_____ / _ \ / _` | |
+| |  | |_| | |_) | |_| |_____| (_) | (_| | |
+|_|   \__,_|_.__/ \__, |      \___/ \__,_|_|
+                  |___/                     
+```
+
+ruby-oai is a Open Archives Protocol for Metadata Harvesting (OAI-PMH)
+library for Ruby. OAI-PMH[http://openarchives.org] it is a somewhat 
+archaic protocol for sharing metadata between digital library repositories. 
+If you are looking to share metadata on the web you are probably better off
+using a feed format like RSS or Atom. If have to work with a backwards 
+digital repository that only offers OAI-PMH access then ruby-oai is your 
+friend.
+
+The [OAI-PMH](http://openarchives.org) spec defines six verbs (Identify, ListIdentifiers, ListRecords, 
 GetRecords, ListSets, ListMetadataFormat) used for discovery and sharing of
 metadata.
 
 The ruby-oai gem includes a client library, a server/provider library and
 a interactive harvesting shell.
 
-=== client
+Client
+------
 
 The OAI client library is used for harvesting metadata from repositories. 
 For example to initiate a ListRecords request to pubmed you can:
 
+```ruby
   require 'oai'
   client = OAI::Client.new 'http://www.pubmedcentral.gov/oai/oai.cgi'
   for record in client.list_records
     puts record.metadata
   end
+```
 
 See OAI::Client for more details
 
-=== provider
+Server
+------
 
-The OAI provider library handles serving local content to other clients.
-
-Setting up a simple provider:
+The OAI provider library handles serving local content to other clients. Here's how to set up a simple provider:
 
+```ruby
   class MyProvider < Oai::Provider
     repository_name 'My little OAI provider'
     repository_url  'http://localhost/provider'
     record_prefix 'oai:localhost'
     admin_email 'root@localhost'   # String or Array
     source_model MyModel.new       # Subclass of OAI::Provider::Model
   end
+```
 
 See OAI::Provider for more details
 
-=== interactive harvester
+Interactive Harvester
+---------------------
 
 The OAI-PMH[http://openarchives.org] client shell allows OAI Harvesting to be configured in
 an interactive manner.  Typing 'oai' on the command line starts the
@@ -53,7 +66,8 @@ operations.
 
 See OAI::Harvester::Shell for more details
 
-== INSTALLATION
+Installation
+------------
 
 Normally the best way to install oai is from rubyforge using the gem
 command line tool:
@@ -68,14 +82,15 @@ So you'll need to:
 
 Where x.y.z is the version of the gem that was generated.
 
-== TODO
+License
+-------
+
+[Public Domain](http://creativecommons.org/publicdomain/zero/1.0/)
 
-* consolidate response classes used by provider and client
-* automatic validation of metadata schemas
-* email the authors with your suggestions
+Authors
+-------
 
-== AUTHORS
+* Ed Summers <ehs@pobox.com>
+* William Groppe <will.groppe@gmail.com>
+* Terry Reese <terry.reese@oregonstate.edu>
 
-- Ed Summers <ehs@pobox.com>
-- William Groppe <will.groppe@gmail.com>
-- Terry Reese <terry.reese@oregonstate.edu>