Merge pull request #22 from peterbe/use-node-8100-for-circleci

use node 8.10.0 for circleci

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     docker:
       # Based on https://nodejs.org/en/
-      - image: circleci/node:7.10
+      - image: circleci/node:8
 
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images