Fix name of add_affix method to add_with_affix to agree with hunspell…

… lib

lib/ffi/hunspell/dictionary.rb

@@ -116,8 +116,8 @@ def add(word)
         Hunspell.Hunspell_add(self,word.to_s)
       end
 
-      def add_affix(word,example)
-        Hunspell.Hunspell_add_affix(self,word.to_s,example.to_s)
+      def add_with_affix(word,example)
+        Hunspell.Hunspell_add_with_affix(self,word.to_s,example.to_s)
       end
 
       alias << add

spec/dictionary_spec.rb

@@ -57,6 +57,20 @@
       expect(subject.valid?('dxg')).to be false
     end
 
+    describe "#add" do
+      it "should add a word" do
+        expect(subject.add('cat')).to be 0
+      end
+    end
+
+    describe "#add_with_affix" do
+      it "should add a word with an example word" do
+        expect(subject.add_with_affix('cat', 'agree')).to be 0
+        expect(subject.valid?('disagreeable')).to be true
+        expect(subject.valid?('discatable')).to be true
+      end
+    end
+
     describe "#stem" do
       it "should find the stems of a word" do
         expect(subject.stem('fishing')).to be == %w[fishing fish]