Update README

README.markdown

@@ -6,49 +6,49 @@ that compile-time converts a string representation of a JSON value into a
 [`Data.Aeson.Value`](http://hackage.haskell.org/package/aeson-0.7.0.6/docs/Data-Aeson.html#t:Value).
 `aesonQQ` has the signature
 
-```haskell
+```haskell ignore
 aesonQQ :: QuasiQuoter
 ```
 
 and is used like
 
-~~~ {.haskell}
+```haskell
 {-# LANGUAGE QuasiQuotes #-}
 import Data.Aeson.QQ
 import Data.Aeson (Value)
 
 john :: Value
 john = [aesonQQ| {age: 23, name: "John", likes: ["linux", "Haskell"]} |]
-~~~
+```
 
 The quasiquoter can also interpolate variables like
 
-~~~ {.haskell}
+```haskell
 jane :: Value
 jane = [aesonQQ| {age: #{age}, name: #{name}} |]
   where
     age = 23 :: Int
     name = "Jane"
-~~~
+```
 
 where the function
 [`toJSON`](http://hackage.haskell.org/package/aeson-0.7.0.6/docs/Data-Aeson.html#v:toJSON).
 will be called on `age` and `name` at runtime.
 
 You can also interpolate arbitrary Haskell expressions:
 
-~~~ {.haskell}
+```haskell
 mary :: Value
 mary = [aesonQQ| {age: #{succ age}, name: "Mary"} |]
   where
     age = 23 :: Int
-~~~
+```
 
 If you want to replace the name of the key in a hash you'll use the $-syntax:
 
-~~~ {.haskell}
+```haskell
 joe :: Value
 joe = [aesonQQ| {$key: 23, name: "Joe"} |]
   where
     key = "age"
-~~~
+```