Tweak introduction. Fixes #22

Author: AmeliaBR

index.html

@@ -188,8 +188,9 @@ <h3>The current state of web maps</h3>
 sounds like it should be the basis of a web map,
 but its basic functionality
 (to define geometric areas on an image that represent distinct hyperlinks)
-has not evolved to include what users today consider a standard web map
-(such as those provided by Google, Bing, or OpenStreetMap).
+has not evolved to include many capabilities
+that users today expect when interacting with maps on the web,
+such as the ability to dynamically change the map view.
 </p>
 <p>
 Web mapping technology has undergone a <a href="https://en.wikipedia.org/wiki/Web_mapping#History_of_web_mapping">long period of evolution.</a>