chore: add prettier code format check to our lint script, and add a prettier script for manually formatting the whole code base

Author: trusktr

.prettierignore

@@ -0,0 +1,6 @@
+CHANGELOG.md
+HISTORY.md
+lib/
+themes/
+_playwright-*/
+emoji-data.*

HISTORY.md

@@ -1,3 +1,4 @@
+<!-- Historical history file (do not edit). -->
 
 <a name="3.7.3"></a>
 ## [3.7.3](https://github.com/QingWei-Li/docsify/compare/v3.7.2...v3.7.3) (2017-05-22)

package.json

@@ -41,8 +41,9 @@
     "docker:test:integration": "npm run docker:cli -- test:integration",
     "docker:test:unit": "npm run docker:cli -- test:unit",
     "docker:test": "npm run docker:cli -- test",
+    "prettier": "prettier . --write",
     "lint:fix": "eslint . --fix",
-    "lint": "eslint .",
+    "lint": "prettier . --check && eslint .",
     "postinstall": "opencollective-postinstall",
     "prepare": "npm run build",
     "pub:next": "cross-env RELEASE_TAG=next sh build/release.sh",