Add manual expand feature (#20)

* Upgraded React version, along with peer deps (couldn't resolve one peer dep warning). Added expandedIndex prop so you can manually control which piece is expanded.
* Updated docs to include expandedIndex prop
* Added requestAnimationFrame shim, and setup enzyme adapter to work with React 16

README.md

@@ -64,9 +64,10 @@ const MyCompo = () => (
 | Name                     | PropType              | Description                                                                                                  | Default    |
 | ------------------------ | --------------------- | ------------------------------------------------------------------------------------------------------------ | ---------- |
 | data                     | Array of data Objects | One data is {value: number (required), color: string, title: string, expanded: bool}                         | []         |
+| expandedIndex            | Number                | Pass in an index to manually control the expanded pie of the pie                                             | -1         |
 | expandOnHover            | Boolean               | Active hover and touch (mobile) effetcs                                                                      | false      |
 | onSectorHover            | Function              | Callback when one sector is hovered or touched (mobile) - ex: `(data, index, event) => {}`                   | null       |
-| expandSize               | Number                | expand size, in pixels. Used if `expandOnHover` is active or one data has `expanded` attribute set to `true` |
+| expandSize               | Number                | expand size, in pixels. Used if `expandOnHover` is active or one data has `expanded` attribute set to `true` |            |
 | strokeColor              | String                | Sector stroke color                                                                                          | "#fff"     |
 | strokeLinejoin           | String                | Sector stroke line join (One of `miter`, `round`, `bevel`)                                                   | "round"    |
 | strokeWidth              | Number                | Sector width, in pixels (0 to disable stroke)                                                                | 1          |

jest.config.json

@@ -6,5 +6,7 @@
   },
   "moduleNameMapper": {
     "\\.(css)$": "<rootDir>/node_modules/jest-css-modules"
-  }
+  },
+  "setupFiles": ["<rootDir>/shim.js", "<rootDir>/setup.js"],
+  "coveragePathIgnorePatterns": ["/node_modules/", "/shim.js"]
 }