Move parseHeader up in the chain - parseDocument can either parse

headers or a paragraph

src/MdToHTML.hs

@@ -166,7 +166,7 @@ parsePara = do
   --  string "\n\n" <|> (eof >> return "") -- Consume the next double-newline or EOF.
   text <- (manyTill get ((string "\n\n") <|> (eof >> return "")))
   when (null text) pfail
-  let parsedText = fst $ leftmostLongestParse (parseHeader <|> parseLine) text -- Parse either a line or a header.
+  let parsedText = fst $ leftmostLongestParse parseLine text -- Parse either a line or a header.
   -- If the paragraph is a header, return a Header token. Otheriwse return a Para token.
   case parsedText of
     Header level token -> return (Header level token)
@@ -174,4 +174,6 @@ parsePara = do
 
 -- Parse a document, which is multiple paragraphs.
 parseDocument :: ReadP MdToken
-parseDocument = (many1 parsePara) >>= (\res -> return (Document (res)))
+parseDocument = do
+  res <- manyTill (parseHeader <++ parsePara) (eof)
+  return (Document res)