Updated readme, discography method moved to Artist model, version bump

lib/models/music_brainz.rb

@@ -1,21 +1,14 @@
 module MusicBrainz
   @@last_query_time = 0
-  
-  def self.last_query_time
-    @@last_query_time
-  end
-  
-  def self.last_query_time= time
-    @@last_query_time = time
-  end
+  @@query_interval = 1.1
 
   def self.load url
-    sleep 1.1 - (Time.now.to_f - self.last_query_time) if Time.now.to_f - self.last_query_time < 1.1
+    sleep @@query_interval - (Time.now.to_f - @@last_query_time) if Time.now.to_f - @@last_query_time < @@query_interval
     response = nil
     5.times do
       begin
         response = open(url, "User-Agent" => "gem musicbrainz (https://github.com/magnolia-fan/musicbrainz) @ " + Socket.gethostname)
-        self.last_query_time = Time.now.to_f
+        @@last_query_time = Time.now.to_f
       rescue => e
         p "MusicBrainz: 503"
       end
@@ -23,10 +16,4 @@ module MusicBrainz
     end
     response
   end
-  
-  def self.discography mbid
-    artist = MusicBrainz::Artist.find(mbid)
-    artist.release_groups.each {|rg| rg.releases.each {|r| r.tracks } }
-    artist
-  end
 end

lib/models/music_brainz/artist.rb

@@ -30,6 +30,12 @@ module MusicBrainz
       @artist
     end
     
+    def self.discography mbid
+      artist = self.find(mbid)
+      artist.release_groups.each {|rg| rg.releases.each {|r| r.tracks } }
+      artist
+    end
+    
     def self.find_by_name name
       matches = self.search name
       matches.length.zero? ? nil : self.find(matches.first[:mbid])