fix: modify the peerDependencies to reflect the need for react 16.3

Author: fritz-c

package.json

@@ -108,8 +108,8 @@
     "yaml-js": "^0.2.3"
   },
   "peerDependencies": {
-    "react": "^16.0.0",
-    "react-dom": "^16.0.0"
+    "react": "^16.3.0-alpha.2",
+    "react-dom": "^16.3.0-alpha.2"
   },
   "dependencies": {
     "@babel/plugin-syntax-jsx": "^7.0.0-beta.42",
@@ -194,4 +194,4 @@
     "printWidth": 100,
     "parser": "typescript"
   }
-}
+}