Simplify the Building section to only recommend mdbook serve command

Author: synaestheory

README.md

@@ -29,21 +29,14 @@ $ cargo install mdbook
 
 ### Building
 
-To build the book, do this:
-
-```bash
-$ mdbook build
-```
-
-The output will be in the `book` subdirectory. You can start a local static webserver 
-in the `book` subdirectory to check it out. [mdbook] also includes a simple static webserver.
-To run the webserver included with mdbook, run the following command:
+The most straight-forward way to build and view the book locally is to use the following command:
 ```bash
 $ mdbook serve
 ```
 
 This serves the book at http://localhost:3000, and rebuilds it on changes.
-You can now view the book in your web browser.
+You can now view the book in your web browser. If you make changes to the book's source code, 
+you should only need to refresh your browser to see them.
 
 _Firefox:_