title: ESlint: Turning off a specific rule across a project
body: <p>I've read the docs on how to disable rules from within a file, however I'm wondering if there is a way to disable or overwrite rules from <code>.eslintrc</code> without overwriting other previous rules &amp; presets I defined. I'm working in an AngularJS project so I used <code>extends</code> property inside my <code>.eslintrc</code> file. </p>
  
  <p>There are 3 specific rules from the angular ESlint plugin that I would like to disable, without disabling everything else I was using previously.</p>
  
  <p>Without the <code>rules</code> property all of my linting rules work fine (spacing, grammar errors etc), but the two lint errors I don't want show up, naturally. However, with the <code>rules</code> property attached, all of my previous rules no longer get applied (spacing grammar errors etc). </p>
  
  <p>I could just declare a rule to disable the specific rule I don't want applied at the top of my file, but that get's very repetitive (that's what I had done previously).</p>
  
  <pre><code>{
    "rules": {
      "wrap-iife": [
        2,
        "inside"
      ],
      "max-len": [
        2,
        120
      ],
      "indent": [
        2,
        2
      ],
      "no-with": 2,
      "no-implicit-coercion": [
        2, {
          "string": true
        }
      ],
      "camelcase": [
        2, {
          "properties": "never"
        }
      ],
      "quotes": [
        2,
        "single"
      ],
      "linebreak-style": [
        2,
        "unix"
      ],
      "semi": [
        2,
        "always"
      ]
    },
    "env": {
      "es6": true,
      "browser": true,
      "node": true
    },
    "ecmaFeatures": {
      "modules": true
    },
    "globals": {
      "angular": true
    },
    "extends": "angular",
  
    //I just want to disable these rules &amp; still use everything else
    //but when I add this, everything else I had previously no longer
    //applies
    "rules": {
      "angular/controller-as-vm": "off",
      "angular/document-service": "off",
      "angular/window-service": "off"
    }
  }
  </code></pre>