Update dependencies to enable Greenkeeper 🌴

README.md

@@ -1,4 +1,7 @@
 # appmetrics-zipkin
+
+[![Greenkeeper badge](https://badges.greenkeeper.io/CloudNativeJS/appmetrics-zipkin.svg)](https://greenkeeper.io/)
+
 <p align=center>
 <a href='http://CloudNativeJS.io/'><img src='https://img.shields.io/badge/homepage-CloudNativeJS-blue.svg'></a>
 <a href='http://github.com/CloudNativeJS/ModuleLTS'><img src='https://img.shields.io/badge/Module%20LTS-Adopted-brightgreen.svg?style=flat' alt='Module LTS Adopted' /></a> 

package.json

@@ -6,18 +6,18 @@
   "dependencies": {
     "properties-reader": "0.0.16",
     "tcp-ping": "^0.1.1",
-    "zipkin": "0.10.1",
-    "zipkin-context-cls": "0.6.1",
-    "zipkin-transport-http": "0.10.1"
+    "zipkin": "0.16.2",
+    "zipkin-context-cls": "0.16.0",
+    "zipkin-transport-http": "0.16.2"
   },
   "devDependencies": {
     "chai": "^4.1.2",
-    "eslint": "^3.14.1",
+    "eslint": "^5.15.1",
     "eslint-config-strongloop": "^2.1.0",
-    "mocha": "^5.2.0",
-    "request-promise-native": "1.0.5",
-    "sinon": "^6.1.3",
-    "tap": "^10.0.1"
+    "mocha": "^6.0.2",
+    "request-promise-native": "1.0.7",
+    "sinon": "^7.2.7",
+    "tap": "^12.5.3"
   },
   "scripts": {
     "test": "npm run test:unit && npm run test:integration",