Replaced the custom weighting calculation by making use of MusicBrainz scoring scheme.

spec/requests/artist_spec.rb

@@ -20,6 +20,19 @@ describe MusicBrainz::Artist do
     matches.first[:name].should == "Kasabian"
   end
 
+  it "should return search results in the right order and pass back the correct score" do
+    matches = MusicBrainz::Artist.search('Chris Martin')
+    
+    matches.first[:score].should == 100
+    matches.first[:mbid].should == "98d1ec5a-dd97-4c0b-9c83-7928aac89bca"
+    matches[1][:score].should == 100
+    matches[1][:mbid].should == "af2ab893-3212-4226-9e73-73a1660b6952"
+    matches[2][:score].should == 95
+    matches[2][:mbid].should == "444d1b63-534b-4ea6-89f0-0af6ab2e20c3"
+    matches[3][:score].should == 95
+    matches[3][:mbid].should == "90fff570-a4ef-4cd4-ba21-e00c7261b05a"
+  end
+  
   it "finds name first than alias" do
     matches = MusicBrainz::Artist.search('Chris Martin')
     matches.length.should be > 0