updated circle config

Author: thebigredgeek

circle.yml

@@ -5,7 +5,7 @@ workflows:
       - node-v6
       - node-v8
       - node-v10
-
+      - node-v12
 version: 2
 jobs:
   node-base: &node-base
@@ -48,3 +48,7 @@ jobs:
     <<: *node-base
     docker:
       - image: node:10
+  node-v12:
+    <<: *node-base
+    docker:
+      - image: node:12

package.json

@@ -8,7 +8,7 @@
     "test": "mocha",
     "build": "tsc",
     "lint": "eslint src test",
-    "clean": "rimraf test"
+    "clean": "rimraf dist"
   },
   "repository": {
     "type": "git",