Upgrade to latest react (#24)

* chore: update packages

* fix: add unsafe to lifecycle method name

* test: update tests for enzyme v3

* test: remove unnecessary exist checks

* chore: update react dependency version

Author: yasincanakmehmet

lib/connect-backbone-to-react.js

@@ -137,7 +137,7 @@ module.exports = function connectBackboneToReact(
         return this.wrappedInstance;
       }
 
-      componentWillReceiveProps(nextProps, nextContext) {
+      UNSAFE_componentWillReceiveProps(nextProps, nextContext) { // eslint-disable-line camelcase
         this.setModels(nextProps, nextContext);
         this.createNewProps();