Install specific React version after Travis install step

chromakode · chromakode · commit 4ec435648342 · 2017-09-26T22:25:34.000-07:00
It looks like the package devDependencies may have been replacing the
specified version of React to test. Oops!
diff --git a/.travis.yml b/.travis.yml
@@ -8,7 +8,7 @@ node_js:
   - "6"
   - "8"
 
-before_install:
+after_install:
   - npm install react@$REACT_VERSION react-dom@$REACT_VERSION
 
 script:
