Extracted `read_data` from site.rb into reader.rb

- Extracted
 - Updated References
 - Ran Tests

Signed-off-by: Martin Jorn Rogalla <martin@martinrogalla.com>

lib/jekyll/reader.rb

@@ -74,6 +74,14 @@ module Jekyll
       end
     end
 
+    # Read and parse all yaml files under <source>/<dir>
+    #
+    # Returns nothing
+    def read_data(dir)
+      base = in_source_dir(dir)
+      read_data_to(base, site.data)
+    end
+
     # Read and parse all yaml files under <dir> and add them to the
     # <data> variable.
     #

lib/jekyll/site.rb

@@ -131,7 +131,7 @@ module Jekyll
     def read
       self.layouts = LayoutReader.new(self).read
       read_directories
-      read_data(config['data_source'])
+      reader.read_data(config['data_source'])
       read_collections
     end
 
@@ -206,14 +206,6 @@ module Jekyll
       end
     end
 
-    # Read and parse all yaml files under <source>/<dir>
-    #
-    # Returns nothing
-    def read_data(dir)
-      base = reader.in_source_dir(dir)
-      reader.read_data_to(base, self.data)
-    end
-
     # Read in all collections specified in the configuration
     #
     # Returns nothing.