adding hints plugin

README.md

@@ -14,17 +14,22 @@ discussions.
 
 You can also use gitbook tooling to view the spec locally.
 
-First, install `gitbook-cli` via npm and run:
+First, install `gitbook-cli` via npm then run the following to install all necessary plugins:
+```
+gitbook install
+```
+
+Now you can have gitbook serve it to you (with live-reload) via:
 ```
 gitbook serve
 ```
 
-Alternatively, you can use gitbook to print a pdf using:
+Alternatively, you can use gitbook to print a pdf (or epub, or mobi) using:
 ```
 gitbook pdf
 ```
 
-(Note: on macOS using the pdf printer may require some extra installation)
+(Note: on macOS using the pdf printer may require some extra installation, epub and mobi might require callibre to be installed, too)
 
 If you're just browsing on GitHub, start with [INTRO.md](INTRO.md) and the
 table of contents in [SUMMARY.md](SUMMARY.md). But really, we recommend using 

book.json

@@ -3,5 +3,13 @@
 	"structure": {
 		"readme": "INTRO.md"
 	},
-	"plugins": ["-sharing"]
+	"plugins": ["-sharing", "hints"],
+	"pluginsConfig": {
+			"hints": {
+					"info": "fa fa-asterisk",
+					"tip": "fa fa-hand-o-right",
+					"danger": "fa fa-warning",
+					"working": "fa fa-wrench"
+			}
+	}
 }