Build documentation with Travis it works as expected

.travis.yml

@@ -20,4 +20,5 @@ install:
   - npm run setup
 
 script:
+  - npm run doc
   - npm run test

package.json

@@ -12,6 +12,7 @@
     "eslint-plugin-jsx-a11y": "^2.2.3",
     "eslint-plugin-react": "^6.8.0",
     "eslint-plugin-redux-saga": "^0.3.0",
+    "gitbook-cli": "^2.3.2",
     "istanbul": "~0.4.2",
     "lerna": "^2.0.0",
     "mocha": "~2.4.5",
@@ -23,6 +24,7 @@
   "scripts": {
     "clean": "npm run removesymlinkdependencies && rm -rf package-lock.json && rm -rf packages/*/package-lock.json",
     "clean:all": "npm run removesymlinkdependencies && rm -rf package-lock.json && rm -rf packages/*/package-lock.json && rm -rf packages/*/node_modules",
+    "doc": "node ./scripts/documentation.js",
     "release": "npm run clean:all && npm install && npm run createsymlinkdependencies && lerna exec --concurrency 1 -- npm install && npm run removesymlinkdependencies && node ./scripts/publish.js $TAG",
     "createsymlinkdependencies": "node ./scripts/createSymlinkDependencies.js",
     "removesymlinkdependencies": "node ./scripts/removeSymlinkDependencies.js",
@@ -56,6 +58,5 @@
     "node": ">= 7.0.0",
     "npm": ">= 3.0.0"
   },
-  "license": "MIT",
-  "dependencies": {}
+  "license": "MIT"
 }

scripts/documentation.js

@@ -0,0 +1,23 @@
+const _ = require('lodash');
+const fs = require('fs');
+const path = require('path');
+const shell = require('shelljs');
+
+try {
+  const versions = fs.readdirSync(path.resolve(process.cwd(), 'docs'), 'utf8');
+
+  _.forEach(versions, (version) => {
+    console.log(`Strapi install plugins version ${version}`);
+    shell.exec(`${path.join(process.cwd(), 'node_modules', '.bin', 'gitbook')} install ${path.join(process.cwd(), 'docs', version)}`);
+    console.log(`Strapi build version ${version}`);
+    shell.exec(`${path.join(process.cwd(), 'node_modules', '.bin', 'gitbook')} build ${path.join(process.cwd(), 'docs', version)}`);
+  });
+
+  console.log('Documentation has been built with success');
+} catch (err) {
+  if (err.stdout) {
+    return console.log(err.stdout.toString('utf8'));
+  }
+
+  console.log(err);
+}