upgrade package to react 15.6

Author: ethanselzer

package.json

@@ -81,19 +81,19 @@
     "jsdom": "^9.12.0",
     "mocha": "^3.2.0",
     "nodemon": "^1.11.0",
-    "react": "^15.4.2",
+    "react": "15.6.2",
     "react-addons-test-utils": "^15.4.2",
-    "react-dom": "^15.4.2",
+    "react-dom": "15.6.2",
     "run-sequence": "^1.2.2",
     "sinon": "^2.0"
   },
   "peerDependencies": {
-    "react": "~0.14.8 || ^15.0.0",
-    "react-dom": "~0.14.8 || ^15.0.0"
+    "react": "~0.14.8 || ^15.0.0"
   },
   "dependencies": {
-    "babel-runtime": "^6.23.0",
-    "lodash.noop": "^3.0.1",
-    "lodash.omit": "^4.5.0"
+    "babel-runtime": "6.26.0",
+    "lodash.noop": "3.0.1",
+    "lodash.omit": "4.5.0",
+    "prop-types": "15.6.0"
   }
 }

src/ReactLazyTree.js

@@ -1,4 +1,5 @@
-import React, { PropTypes } from 'react';
+import React from 'react';
+import PropTypes from 'prop-types';
 import omit from 'lodash.omit';
 import noop from 'lodash.noop';
 import TreeNode from './TreeNode';