Add doc

Author: armano2

Diff for: docs/rules/no-mutating-props.md

@@ -0,0 +1,63 @@
+# disallow mutation of component props (vue/no-mutating-props)
+
+This rule reports mutation of component props.
+
+## Rule Details
+
+:-1: Examples of **incorrect** code for this rule:
+
+```html
+<template>
+  <div>
+    <input v-model="value" @click="openModal">
+  </div>
+</template>
+<script>
+  export default {
+    props: {
+      value: {
+        type: String,
+        required: true
+      }
+    },
+    methods: {
+      openModal() {
+        this.value = 'test'
+      }
+    }
+  }
+</script>
+```
+
+:+1: Examples of **correct** code for this rule:
+
+```html
+<template>
+  <div>
+    <input :value="value" @input="$emit('input', $event.target.value)" @click="openModal">
+  </div>
+</template>
+<script>
+  export default {
+    props: {
+      value: {
+        type: String,
+        required: true
+      }
+    },
+    methods: {
+      openModal() {
+        this.$emit('input', 'test')
+      }
+    }
+  }
+</script>
+```
+
+## :wrench: Options
+
+Nothing.
+
+## Related links
+
+- [Style guide - Prop Mutation - deprecated](https://vuejs.org/v2/guide/migration.html#Prop-Mutation-deprecated)

Diff for: lib/rules/no-mutating-props.js

@@ -1,5 +1,5 @@
 /**
- * @fileoverview Check if component props are not mutated
+ * @fileoverview disallow mutation component props
  * @author 2018 Armano
  */
 'use strict'
@@ -13,7 +13,7 @@ const utils = require('../utils')
 module.exports = {
   meta: {
     docs: {
-      description: 'disallow mutation of props',
+      description: 'disallow mutation of component props',
       category: undefined,
       url: 'https://github.com/vuejs/eslint-plugin-vue/blob/v5.0.0-beta.3/docs/rules/no-mutating-props.md'
     },

Diff for: tests/lib/rules/no-mutating-props.js

@@ -1,5 +1,5 @@
 /**
- * @fileoverview Check if component props are not mutated
+ * @fileoverview disallow mutation of component props
  * @author 2018 Armano
  */
 'use strict'