Adds a missing import

The example implies the use of `\ParseException`, but I think the author meant `andreskrey\Readability\ParseException`

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 19b3dc3..67de111 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ Then, create a Readability class and pass a Configuration class, feed the `parse
 ```php 
 use andreskrey\Readability\Readability;
 use andreskrey\Readability\Configuration;
+use andreskrey\Readability\ParseException;
 
 $readability = new Readability(new Configuration());