Use create-react-class to avoid React.createClass deprecations

fixes reactjs#367

lib/components/Modal.js

@@ -8,6 +8,7 @@ var refCount = require('../helpers/refCount');
 var elementClass = require('element-class');
 var renderSubtreeIntoContainer = require("react-dom").unstable_renderSubtreeIntoContainer;
 var Assign = require('lodash.assign');
+var createReactClass = require('create-react-class')
 
 var SafeHTMLElement = ExecutionEnvironment.canUseDOM ? window.HTMLElement : {};
 var AppElement = ExecutionEnvironment.canUseDOM ? document.body : {appendChild: function() {}};
@@ -16,7 +17,7 @@ function getParentElement(parentSelector) {
   return parentSelector();
 }
 
-var Modal = React.createClass({
+var Modal = createReactClass({
 
   displayName: 'Modal',
   statics: {

lib/components/ModalPortal.js

@@ -3,6 +3,7 @@ var div = React.DOM.div;
 var focusManager = require('../helpers/focusManager');
 var scopeTab = require('../helpers/scopeTab');
 var Assign = require('lodash.assign');
+var createReactClass = require('create-react-class');
 
 // so that our CSS is statically analyzable
 var CLASS_NAMES = {
@@ -18,7 +19,7 @@ var CLASS_NAMES = {
   }
 };
 
-var ModalPortal = module.exports = React.createClass({
+var ModalPortal = module.exports = createReactClass({
 
   displayName: 'ModalPortal',
   shouldClose: null,

package.json

@@ -56,6 +56,7 @@
     "webpack-dev-server": "1.11.0"
   },
   "dependencies": {
+    "create-react-class": "^15.5.2",
     "element-class": "^0.2.0",
     "exenv": "1.2.0",
     "lodash.assign": "^4.2.0",

yarn.lock

@@ -1087,6 +1087,13 @@ core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
+create-react-class@^15.5.2:
+  version "15.5.2"
+  resolved "https://registry.yarnpkg.com/create-react-class/-/create-react-class-15.5.2.tgz#6a8758348df660b88326a0e764d569f274aad681"
+  dependencies:
+    fbjs "^0.8.9"
+    object-assign "^4.1.1"
+
 cross-spawn@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-4.0.2.tgz#7b9247621c23adfdd3856004a823cbe397424d41"
@@ -1563,19 +1570,7 @@ [email protected]:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/eyes/-/eyes-0.1.8.tgz#62cf120234c683785d902348a800ef3e0cc20bc0"
 
-fbjs@^0.8.1, fbjs@^0.8.4:
-  version "0.8.8"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.8.tgz#02f1b6e0ea0d46c24e0b51a2d24df069563a5ad6"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
-fbjs@^0.8.9:
+fbjs@^0.8.1, fbjs@^0.8.4, fbjs@^0.8.9:
   version "0.8.12"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.12.tgz#10b5d92f76d45575fd63a217d4ea02bea2f8ed04"
   dependencies:
@@ -3202,6 +3197,10 @@ object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.0.tgz#7a3b3d0e98063d43f4c03f2e8ae6cd51a86883a0"
 
+object-assign@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+
 [email protected]:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"