(chore) add reset script

Author: antoine92190

demo/package.json

@@ -9,6 +9,7 @@
 		"s": "npm run serve",
 		"build": "vue-cli-service build",
 		"lint": "vue-cli-service lint",
+		"reset": "rm -rf node_modules && rm -rf package-lock.json && npm i --force",
 		"gpages": "sh deploy.sh",
 		"latest": "npm i https://github.com/antoine92190/vue-advanced-chat/tarball/master"
 	},

package.json

@@ -37,7 +37,8 @@
 		"prepublish": "npm run lint && npm run build",
 		"publish-beta": "npm publish --tag beta",
 		"lint": "vue-cli-service lint",
-		"test": "jest"
+		"test": "jest",
+		"reset": "rm -rf node_modules && rm -rf package-lock.json && npm i --force"
 	},
 	"typings": "types/index.d.ts",
 	"files": [