Keep react at 16.2 for now

package.json

@@ -41,13 +41,13 @@
     "now-logs": "^0.0.7",
     "prop-types": "^15.6.1",
     "puppeteer": "^1.0.0",
-    "react": "^16.2.0",
+    "react": "16.2.0",
     "react-click-outside": "^3.0.0",
     "react-codemirror2": "^4.2.1",
     "react-color": "^2.13.8",
     "react-dnd": "^2.4.0",
     "react-dnd-html5-backend": "^2.4.1",
-    "react-dom": "^16.2.0",
+    "react-dom": "16.2.0",
     "react-image-crop": "^3.0.9",
     "react-spinkit": "^3.0.0",
     "react-spinner": "^0.2.7",
@@ -88,7 +88,9 @@
   },
   "greenkeeper": {
     "ignore": [
-      "webpack"
+      "webpack",
+      "react",
+      "react-dom"
     ]
   },
   "description": "Create and share beautiful images of your source code",

yarn.lock

@@ -5758,7 +5758,7 @@ react-dnd@>=2, react-dnd@^2.4.0:
     lodash "^4.2.0"
     prop-types "^15.5.10"
 
-react-dom@^16.2.0:
+react-dom@16.2.0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.2.0.tgz#69003178601c0ca19b709b33a83369fe6124c044"
   dependencies:
@@ -5801,7 +5801,7 @@ react-syntax-highlight@^15.3.1:
     highlight.js "^9.12.0"
     prop-types "^15.5.10"
 
-react@>=15, react@^16.2.0:
+react@16.2.0, react@>=15:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react/-/react-16.2.0.tgz#a31bd2dab89bff65d42134fa187f24d054c273ba"
   dependencies: