Allow .bom to support multiple lines.

README.md

@@ -76,11 +76,14 @@ Octopart::Part.match('texas instruments', 'SN74LS240N')
 
 **#bom**
 
-Return an array of parts that match the criteria
+Return an array of parts for each line specified.
 
 ```ruby
 Octopart::Part.bom(mpn: 'SN74LS240N')
-# => [<Octopart::Part >, ... ]
+# => [[<Octopart::Part >, ... ]]
+
+Octopart::Part.bom([{mpn: 'SN74LS240N'}, {mpn: 'ATMEGA328P-PU'}])
+# => [[<Octopart::Part >, ... ], [<Octopart::Part >, ... ]]
 ```
 
 ## Contributing

lib/octopart/part.rb

@@ -80,8 +80,7 @@ def match(manufacturer, mpn)
       def bom(lines)
         lines = [lines] unless lines.is_a?(Array)
         response = JSON.parse(self.get('bom/match', lines: lines.to_json))
-        parts = response['results'].first['items']
-        self.build(parts)
+        response['results'].map { |line| self.build(line['items']) }
       end
 
       # Internal: Converts a Hash or an Array of Hash into an Octopart::Part or

spec/lib/part_spec.rb

@@ -57,8 +57,13 @@
       subject { described_class.bom(mpn: 'SN74LS240N') }
 
       it { should be_a(Array) }
-      it "each object in the array should be a part" do
-        subject.each { |part| part.should be_a(Octopart::Part) }
+      it "each object in the array should be an array part" do
+        subject.each do |line|
+          line.should be_a(Array)
+          line.each do |part|
+            part.should be_a(Octopart::Part)
+          end
+        end
       end
     end
   end