Publish docs to gh-pages on merge to master

package.json

@@ -25,6 +25,7 @@
     "test": "jest",
     "test:ci": "jest --ci --runInBand --collectCoverage --reporters=default --reporters=jest-junit && codecov",
     "staticDeploy": "./generateStaticSite.sh",
+    "docs:deploy": "gh-pages -d docs/latest/_book",
     "start": "yarn run dev",
     "predeploy": "cd example && npm install && yarn run build:package",
     "preBuild": "yarn run version && yarn run copy:webworkers",
@@ -116,6 +117,7 @@
     "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-react": "^7.11.1",
+    "gh-pages": "2.0.1",
     "husky": "1.3.x",
     "identity-obj-proxy": "3.0.x",
     "jest-canvas-mock": "2.0.0",