chore: add circleci config and readme badges

Author: davewasmer

.circleci/config.yml

@@ -0,0 +1,35 @@
+# Javascript Node CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-javascript/ for more details
+#
+
+default-test-config: &default-test-config
+  working_directory: ~/repo
+  steps:
+    - checkout
+    - restore_cache:
+        key: dependencies-{{ checksum "yarn.lock" }}
+    - run: yarn install
+    - save_cache:
+        paths:
+          - node_modules
+        key: dependencies-{{ checksum "yarn.lock" }}
+    - run: yarn test
+
+version: 2
+jobs:
+  test-node-8:
+    <<: *default-test-config
+    docker:
+      - image: circleci/node:8.9.4
+  test-node-9:
+    <<: *default-test-config
+    docker:
+      - image: circleci/node:9.5.0
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - "test-node-8"
+      - "test-node-9"

README.md

@@ -1,5 +1,10 @@
 # denali-typescript
 
+[![CircleCI](https://img.shields.io/circleci/project/github/denali-js/denali-typescript.svg?style=flat-square)](https://circleci.com/gh/denali-js/denali-typescript)
+[![Dependencies](https://img.shields.io/david/denali-js/denali-typescript.svg?style=flat-square)](https://david-dm.org/denali-js/denali-typescript)
+[![npm downloads](https://img.shields.io/npm/dm/denali-typescript.svg?style=flat-square)](https://www.npmjs.com/package/denali-typescript)
+![latest version](https://img.shields.io/npm/v/denali-typescript.svg?style=flat-square)
+
 Build your Denali app using Typescript! Just `$ denali install denali-typescript`
 and you're good to go!