Upgrade to CircleCI v2 so that builds will start working (#3)

Author: Tyler Breisacher

circle.yml

@@ -1,3 +1,20 @@
-machine:
-  node:
-    version: 5
+version: 2
+
+jobs:
+  lint_and_test:
+    docker:
+      - image: hustleinc/ci-base:21
+    steps:
+      - checkout
+      - run:
+          name: Install Dependencies
+          command: npm install --no-progress
+      - run:
+          name: Run Tests
+          command: npm test
+
+workflows:
+  version: 2
+  hustle_workflow:
+    jobs:
+      - lint_and_test