Update README.md

book/README.md

@@ -1,26 +1,26 @@
 Building the Solana book
 ---
 
-Install mdbook:
+Install the book's dependnecies, build, and test the book:
 
 ```bash
-cargo install mdbook
+$ ./build.sh
 ```
 
 Run any Rust tests in the markdown:
 
 ```bash
-make test
+$ make test
 ```
 
 Render markdown as HTML:
 
 ```bash
-make build
+$ make build
 ```
 
 Render and view the book:
 
 ```bash
-make open
+$ make open
 ```