Merge branch 'Kikobeats-travis-node' into dev

* Kikobeats-travis-node:
  Restore linter run in travis
  Upgrade nvm node version
  WIP
  WIP
  Run builds from last node LTS and stable

.nvmrc

@@ -1 +1 @@
-4.4.3
+6.9.2

.travis.yml

@@ -3,5 +3,9 @@ sudo: false
 language: node_js
 
 node_js:
-  - 6
-  - 4
+  - "node"
+  - "lts/*"
+
+script:
+  - npm run lint
+  - npm test

package.json

@@ -104,11 +104,10 @@
     "patch": "bumped release patch",
     "prebuild": "npm run clean",
     "prepublish": "npm run build",
-    "pretest": "npm run lint",
     "release": "bumped release",
     "start": "cross-env NODE_ENV=development UV_THREADPOOL_SIZE=100 node ./server",
-    "test": "node --harmony_proxies node_modules/.bin/jest --maxWorkers 4",
-    "test:watch": "node --harmony_proxies node_modules/.bin/jest --watch --no-watchman",
+    "test": "jest",
+    "test:watch": "jest --watch --no-watchman",
     "tsd": "cpx \"./components/**/*.d.ts\" ./lib"
   },
   "license": "MIT",