Remove gitbook stuff

Author: Hyunje Jun

.gitignore

@@ -60,9 +60,6 @@ typings/
 # Built files
 dist
 
-# GitBook
-_book
-
 # Test recent request
 test/helpers/request.json
 

CONTRIBUTING.md

@@ -28,8 +28,7 @@ Also, you may use the following npm scripts for development:
 * `npm run format:check`: Silently run `format` and report formatting errors
 * `npm run build`: Build TypeScript code into JavaScript. The built files will
   be placed in `dist/`.
-* `npm run docs`: Build GitBook docs and serve a doc server
-  + Please install GitBook first to modify/build documentation: `npm i -g gitbook-cli`
+* `npm run docs`: Build and serve documentation
 
 We test, lint and build on CI, but it is always nice to check them before
 uploading a pull request.

package.json

@@ -13,8 +13,6 @@
     "lib"
   ],
   "scripts": {
-    "docs:dev": "vuepress dev docs",
-    "docs:build": "vuepress build docs",
     "pretest": "npm run build",
     "test": "API_BASE_URL=http://localhost:1234/ TEST_PORT=1234 TS_NODE_CACHE=0 nyc mocha",
     "prettier": "prettier --parser typescript --trailing-comma all \"{lib,test}/**/*.ts\"",
@@ -23,7 +21,8 @@
     "clean": "del-cli dist",
     "prebuild": "npm run format:check && npm run clean",
     "build": "tsc",
-    "docs": "gitbook install && gitbook serve docs",
+    "docs": "vuepress dev docs",
+    "docs:build": "vuepress build docs",
     "docs:publish": "./docs/publish.sh",
     "release": "npm run build && npm publish --access public",
     "precommit": "npm run format:check",