upgrade docz + fix typos and added test

Author: sagiv.bengiat

package.json

@@ -61,7 +61,7 @@
     "babel-eslint": "^9.0.0",
     "concurrently": "^4.1.0",
     "cross-env": "^5.1.4",
-    "docz": "^2.3.0-alpha.6",
+    "docz": "^2.3.1",
     "enzyme": "^3.6.0",
     "enzyme-adapter-react-16": "^1.5.0",
     "eslint": "5.12.0",

src/docs/mdx/index.mdx

@@ -40,6 +40,7 @@ import Carousel from 'react-elastic-carousel'
 
 ## Styling
 
-Almost every element in `react-elastic-carousel` has a css class with the `rec-` prefix (rec is short React Elastic Carousel). 
+Almost every element in `react-elastic-carousel` has a css class with the `rec-` prefix (rec is short React Elastic Carousel).  
+For example: `rec-arrow` for both arrow buttons or `rec-arrow-left` just for the left one. 
 
-For example: `rec-arrow` for both arrow buttons or `rec-arrow-left` just for the left one. [example](/styling)
+You can see a code example [here](/styling).

src/react-elastic-carousel/components/Track.js

@@ -48,7 +48,7 @@ const Track = ({
         onSwipedRight={onSwipedRight}
         onSwipedUp={onSwipedUp}
         onSwipedDown={onSwipedDown}
-        className={swipebleClassName}
+        className={swipeableClassName}
       >
         {item}
       </Swipeable>

src/react-elastic-carousel/utils/__tests__/helpers.test.js

@@ -13,6 +13,11 @@ describe("helpers", () => {
     expect(css).toEqual("rec rec-test");
   });
 
+  it("cssPrefix multi keys", () => {
+    const css = helpers.cssPrefix("test", "test2");
+    expect(css).toEqual("rec rec-test rec-test2");
+  });
+
   it("pipe", () => {
     const inc = num => num + 1;
     const double = num => num * 2;

yarn.lock

@@ -6224,7 +6224,7 @@ docz-utils@^2.3.0:
     unist-util-is "^3.0.0"
     unist-util-visit "^1.4.1"
 
-docz@^2.3.0-alpha.6:
+docz@^2.3.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/docz/-/docz-2.3.1.tgz#931cd840e2f9a25691fb7c67fa48d4a6ef1476a3"
   integrity sha512-HlbLqpizhieqvjD6xxNr6Nj8sk00vnHbLh4wHabXUpOi8ZkILBDSLmnfGzozAgmT+HN18CbszYMXCOlbcr4MXQ==