**Do you want to request a *feature* or report a *bug*?**
feature

**What is the current behavior?**
Using in my `package.json`:
```
    "eslint": "^6.0.0",
    "eslint-plugin-react-hooks": "^1.6.0",
```
Yarn emits:
```
warning " > eslint-plugin-react-hooks@1.6.0" has incorrect peer dependency "eslint@^3.0.0 || ^4.0.0 || ^5.0.0".
```

**What is the expected behavior?**
No warning.

AFAICT, there shouldn't be other change needed besides updating the peer dependency version in the `package.json`: https://eslint.org/docs/user-guide/migrating-to-6.0.0
so it looks like I could just ignore the warning, but I'd rather be sure the plugin is actually compatible with ESLint 6.0.0

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
n/a
// This *must* be invalid.
        function renderItem() {
          useState();
        }
        function List(props) {
          return props.items.map(renderItem);
        }
      `,
      errors: [functionError('useState', 'renderItem')],
    },
    {
      code: `
        // Currently invalid because it violates the convention and removes the "taint"
        // from a hook. We *could* make it valid to avoid some false positives but let's
        // ensure that we don't break the "renderItem" and "normalFunctionWithConditionalHook"
        // cases which must remain invalid.
        function normalFunctionWithHook() {
          useHookInsideNormalFunction();
        }
      `,
      errors: [
        functionError('useHookInsideNormalFunction', 'normalFunctionWithHook'),
      ],
    },
    {
      code: `
        // Invalid because it's dangerous and might not warn otherwise.
        // This *must* be invalid.
        function normalFunctionWithConditionalHook() {
          if (cond) {