added pandoc_reader (pandoc markdown reader plugin) as submodule

.gitmodules

@@ -49,3 +49,6 @@
 [submodule "bootstrapify"]
 	path = bootstrapify
 	url = https://github.com/ingwinlu/pelican-bootstrapify.git
+[submodule "pandoc_reader"]
+	path = pandoc_reader
+	url = https://github.com/liob/pandoc_reader.git

pandoc_reader

@@ -0,0 +1 @@
+Subproject commit b3c968fa234f25e258ee9b86603af62074f6e79a