Update .travis.yml

Author: fanatid

.travis.yml

@@ -10,6 +10,7 @@ node_js:
   - "7"
   - "8"
   - "9"
+  - "10"
 addons:
   apt:
     sources:
@@ -25,7 +26,7 @@ matrix:
   fast_finish: true
   include:
     - os: linux
-      node_js: "8"
+      node_js: "10"
       env: TEST_SUITE=lint
 before_install:
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX=g++-6; fi