Updated README [ci skip]

JoshyPHP · JoshyPHP · commit 85a007786415 · 2018-01-05T06:27:13.000+01:00
diff --git a/README.md b/README.md
@@ -153,7 +153,7 @@ echo $builder->build(['☺', '☹']);
 [\u2639\u263a]
 ```
 
-### Adding meta-characters
+### Using meta-characters
 
 Some individual characters can be used to represent arbitrary expressions in the input strings. The requirements are that:
 
