set joi as peerDependencies

Author: chentsulin

README.md

@@ -9,7 +9,7 @@
 ## Installation
 
 ```sh
-$ npm install koa-context-validator
+$ npm install koa-context-validator joi
 ```
 
 ## Usage

package.json

@@ -21,8 +21,8 @@
     "prettier": "prettier --write --list-different .",
     "prettier:check": "prettier --check ."
   },
-  "dependencies": {
-    "joi": "^17.4.2"
+  "peerDependencies": {
+    "joi": ">= 17.4.2"
   },
   "devDependencies": {
     "@babel/cli": "^7.14.8",
@@ -35,6 +35,7 @@
     "eslint-plugin-import": "^2.24.0",
     "husky": "^7.0.1",
     "jest": "^27.0.6",
+    "joi": "^17.4.2",
     "koa": "^2.13.1",
     "koa-bodyparser": "^4.3.0",
     "koa-compose": "^4.1.0",