(deps): update peerDeps to support React 16 without warnings

- seems to work flawlessly with React 16 and React DOM 16 but the
  `package.json` needed to be updated so as not to throw warnings
  when using 16 during installation

Author: lopis

package.json

@@ -43,8 +43,8 @@
   },
   "peerDependencies": {
     "prop-types": "^15.5.8",
-    "react": "^0.14.0 || ^15.0.0",
-    "react-dom": "^0.14.0 || ^15.0.0"
+    "react": "0.14 - 16",
+    "react-dom": "0.14 - 16"
   },
   "dependencies": {
     "trim-canvas": "^0.1.0"