docs: Add gitbook files

Author: icebob

.gitignore

@@ -1,6 +1,7 @@
 .DS_Store
 node_modules/
 coverage/
+docs/_book/
 npm-debug.log
 selenium-debug.log
 test/unit/coverage

docs/README.md

@@ -0,0 +1 @@
+# vue-form-generator

docs/SUMMARY.md

@@ -0,0 +1 @@
+# Summary

docs/book.json

@@ -0,0 +1,19 @@
+{
+  "gitbook": "2.x.x",
+  "plugins": ["edit-link", "github", "advanced-emoji"],
+  "pluginsConfig": {
+    "edit-link": {
+      "base": "https://github.com/icebob/vue-form-generator/tree/master/docs",
+      "label": "Edit This Page"
+    },
+    "github": {
+      "url": "https://github.com/icebob/vue-form-generator/"
+    }
+  },
+  "links": {
+    "sharing": {
+      "facebook": false,
+      "twitter": false
+    }
+  }
+}

package.json

@@ -10,6 +10,7 @@
     "lint": "eslint --ext=.js,.vue src",
     "coverall": "karma start test/unit/karma.conf.js --single-run --reporters coverage,coveralls",
     "changelog": "conventional-changelog -i CHANGELOG.md -s",
+    "docs": "cd docs && gitbook serve",
     "unit": "karma start test/unit/karma.conf.js",
     "e2e": "node test/e2e/runner.js",
     "test": "npm run unit",
@@ -52,6 +53,7 @@
     "eslint-plugin-vue": "0.1.1",
     "faker": "3.1.0",
     "git-commit-message-convention": "git://github.com/kazupon/git-commit-message-convention.git#065dfffbe2de5f6f16150aac9d4db7fdf5515e56",
+    "gitbook-cli": "2.1.3",
     "inject-loader": "2.0.1",
     "isparta-loader": "2.0.0",
     "jade": "1.11.0",