Merge pull request #1180 from kayakr/patch-1

typo

README.md

@@ -272,7 +272,7 @@ Reveal.initialize({
 
 ### Auto-sliding
 
-Presentations can be configure to progress through slides automatically, without any user input. To enable this you will need to tell the framework how many milliseconds it should wait between slides:
+Presentations can be configured to progress through slides automatically, without any user input. To enable this you will need to tell the framework how many milliseconds it should wait between slides:
 
 ```javascript
 // Slide every five seconds