fix(circle): upgrade to version 2.0

This is a `fix` to test the semantic release.

Author: spirosikmd

.circleci/config.yml

@@ -0,0 +1,31 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:8
+
+    steps:
+      - checkout
+
+      - restore_cache:
+          keys:
+          - v1-dependencies-{{ checksum "yarn.lock" }}
+          - v1-dependencies-
+
+      - run:
+          name: Configuring NPM registry
+          command: |
+            [[ -z "$NPM_TOKEN" ]] && echo "NPM_TOKEN not set" && exit 1
+            echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
+            yarn config set registry http://registry.npmjs.org/
+
+      - run: yarn install
+
+      - save_cache:
+          paths:
+            - node_modules
+          key: v1-dependencies-{{ checksum "yarn.lock" }}
+
+      - run: yarn test --ci
+
+      - run: yarn run semantic-release || true