upgrade to circle 2 (#4)

* upgrade to circle 2

* remove .npmrc

* correct npmrc path

* add lockfile

* cache bust on lockfile

Author: Renzo Lucioni

.circleci/config.yml

@@ -0,0 +1,72 @@
+version: 2
+
+defaults: &defaults
+  docker:
+    - image: circleci/node:8
+
+jobs:
+  build:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - npm-cache-{{ checksum "package-lock.json" }}
+            - npm-cache-
+      - run: npm install
+      - save_cache:
+          key: npm-cache-{{ checksum "package-lock.json" }}
+          paths:
+            - node_modules
+      - run: npm run lint
+      - run: npm run build
+      - run: npm run test:mocha
+      - run:
+          name: install nvm
+          command: |
+            curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
+            echo "source ~/.nvm/nvm.sh --no-use" >> $BASH_ENV
+      - run: nvm install 6 && nvm use 6 && npm run test:mocha
+      - run: rm -rf dist/__specs__
+      - run: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> .npmrc
+      - persist_to_workspace:
+          root: ~/project
+          paths: 
+            - .npmrc
+            - dist
+  deploy:
+    <<: *defaults
+    steps:
+      - checkout
+      - attach_workspace:
+          at: ~/project
+      - run: npm publish
+  deploy-beta:
+    <<: *defaults
+    steps:
+      - checkout
+      - attach_workspace:
+          at: ~/project
+      - run: npm publish --tag beta
+
+workflows:
+  version: 2
+  build-deploy:
+    jobs:
+      - build
+      - deploy:
+          requires:
+            - build
+          filters:
+            tags:
+              only: /release-[0-9]+\.[0-9]+\.[0-9]+/
+            branches:
+              ignore: /.*/
+      - deploy-beta:
+          requires:
+            - build
+          filters:
+            tags:
+              only: /beta-[0-9]+\.[0-9]+\.[0-9]+/
+            branches:
+              ignore: /.*/

.nvmrc

@@ -0,0 +1 @@
+v8.3.0