Add gitbook skeleton

.gitignore

@@ -18,3 +18,6 @@ pids
 
 # Optional REPL history
 .node_repl_history
+
+# GitBook
+_book

book.json

@@ -0,0 +1,17 @@
+{
+  "gitbook": "2.x.x",
+  "title": "Insomnia Rest Client",
+  "structure": {
+    "summary": "docs/README.md"
+  },
+  "plugins": ["edit-link", "prism", "-highlight", "github", "anker-enable"],
+  "pluginsConfig": {
+    "edit-link": {
+      "base": "https://github.com/gschier/insomnia/tree/master",
+      "label": "Edit This Page"
+    },
+    "github": {
+      "url": "https://github.com/gschier/insomnia/"
+    }
+  }
+}

docs/README.md

@@ -0,0 +1,4 @@
+Summary
+=======
+
+- [Installation](docs/installation.md)

docs/installation.md

@@ -0,0 +1,2 @@
+Hello Foo
+=========