Update ref docs to be consistent with version 3

Author: Adam Golab

docs/api/ReactWrapper/ref.md

@@ -1,6 +1,6 @@
-# `.ref(refName) => ReactWrapper`
+# `.ref(refName) => ReactComponent`
 
-Returns a wrapper of the node that matches the provided reference name.
+Returns the node that matches the provided reference name.
 
 
 NOTE: can only be called on a wrapper instance that is also the root instance.
@@ -12,7 +12,7 @@ NOTE: can only be called on a wrapper instance that is also the root instance.
 
 #### Returns
 
-`ReactWrapper`: A wrapper of the node that matches the provided reference name.
+`ReactComponent`: The node that matches the provided reference name.
 
 
 
@@ -35,8 +35,7 @@ class Foo extends React.Component {
 
 ```jsx
 const wrapper = mount(<Foo />);
-expect(wrapper.ref('secondRef').prop('amount')).to.equal(4);
-expect(wrapper.ref('secondRef').text()).to.equal('Second');
+expect(wrapper.ref('secondRef').innerText).to.equal('Second');
 ```
 
 

packages/enzyme/src/ReactWrapper.js

@@ -187,12 +187,12 @@ class ReactWrapper {
 
   /**
    * If the root component contained a ref, you can access it here
-   * and get a wrapper around it.
+   * and get an actual ref.
    *
    * NOTE: can only be called on a wrapper instance that is also the root instance.
    *
    * @param {String} refname
-   * @returns {ReactWrapper}
+   * @returns {ReactComponent}
    */
   ref(refname) {
     if (this[ROOT] !== this) {