ci: remove travis (#233)

Author: hyj1991

.github/workflows/nodejs.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [8, 10, 12]
+        node-version: [8, 10, 12, 14]
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps: