simplify CI

Author: alexandercbooth

.circleci/config.yml

@@ -19,18 +19,15 @@ jobs:
                 keys:
                   - yarn-packages-{{ checksum "yarn.lock" }}
                   - yarn-packages-
-
-      - run: sudo npm i -g
+      - run:
+          name: Install Dependencies
+          command: yarn
 
       - save_cache:
           name: Save Yarn Package Cache
           key: yarn-packages-{{ checksum "yarn.lock" }}
           paths:
             - ~/.cache/yarn
-      
-      - run:
-          name: Create an nteract app
-          command: create-nteract-app snow-leopard
 
       - run: 
           name: Run tests