Renamed page.meta_data to page.metadata for consistency with views

lib/gollum/page.rb

@@ -221,7 +221,7 @@ module Gollum
     # Public: Embedded metadata.
     #
     # Returns Hash of metadata.
-    def meta_data()
+    def metadata()
       formatted_data if markup_class.metadata == nil
       markup_class.metadata
     end

test/test_markup.rb

@@ -656,7 +656,7 @@ np.array([[2,2],[1,3]],np.float)
     page = @wiki.page("Bilbo Baggins")
     rendered = Gollum::Markup.new(page).render
     assert_equal output, rendered 
-    assert_equal result, page.meta_data
+    assert_equal result, page.metadata
   end
 
   test "metadata blocks with newline" do
@@ -671,7 +671,7 @@ np.array([[2,2],[1,3]],np.float)
     page = @wiki.page("Bilbo Baggins")
     rendered = Gollum::Markup.new(page).render
     assert_equal output, rendered 
-    assert_equal result, page.meta_data
+    assert_equal result, page.metadata
   end
 
   test "metadata sanitation" do
@@ -686,7 +686,7 @@ np.array([[2,2],[1,3]],np.float)
     page = @wiki.page("Bilbo Baggins")
     rendered = Gollum::Markup.new(page).render
     assert_equal output, rendered 
-    assert_equal result, page.meta_data
+    assert_equal result, page.metadata
   end
 
   #########################################################################

test/test_page.rb

@@ -231,7 +231,7 @@ context "within a sub-directory" do
   test "get metadata on page" do
     page = @wiki.page('Elrond')
     assert_equal Gollum::Page, page.class
-    assert_equal 'elf', page.meta_data['race']
+    assert_equal 'elf', page.metadata['race']
   end
 
 end