Build: Update build matrices

Author: phated

.travis.yml

@@ -1,8 +1,9 @@
 sudo: false
 language: node_js
 node_js:
+  - '10'
+  - '8'
   - '6'
-  - '5'
   - '4'
   - '0.12'
   - '0.10'

appveyor.yml

@@ -7,8 +7,9 @@ environment:
     - nodejs_version: "0.10"
     - nodejs_version: "0.12"
     - nodejs_version: "4"
-    - nodejs_version: "5"
     - nodejs_version: "6"
+    - nodejs_version: "8"
+    - nodejs_version: "10"
 
 install:
   - ps: Install-Product node $env:nodejs_version