Added favico plugin

Moved logo to assets/images
Added docs to book ignore

.bookignore

@@ -3,6 +3,7 @@ _book/
 _docs/
 _examples/
 _tools/
+docs/
 
 Makefile
 building_the_book.md

Makefile

@@ -1,4 +1,5 @@
 build: init examples
+	rm -rf _.docs
 	gitbook build . _docs
 	
 init:

_layouts/website/page.html

@@ -174,7 +174,7 @@
         display: inline-block;
         width: 16px;
         height: 16px;
-        background: url(nats.svg);
+        background: url(/assets/images/nats.svg);
         background-size: 16px 16px;
     }
 

book.json

@@ -6,6 +6,7 @@
     "prism",
     "-sharing",
     "-highlight",
+    "custom-favicon",
     "include-html",
     "toggle-chapters",
     "anchors"
@@ -16,6 +17,7 @@
         "ascii": "markup",
         "text": "markup"
       }
-    }
+    },
+    "favicon": "assets/images/favicon.ico"
   }
 }