fix: Use node 10 (#142)

fix: Use node 10

Author: germanattanasio

Diff for: .travis.yml

@@ -1,5 +1,5 @@
 language: node_js
-node_js: 8
+node_js: 10
 sudo: required
 before_install:
 - export CHROME_BIN=chromium-browser
@@ -31,4 +31,4 @@ deploy:
   skip_cleanup: true
   script: npx semantic-release@15
   on:
-    node: 12
+    node: 10

Diff for: examples/package.json

@@ -27,7 +27,7 @@
     "whatwg-fetch": "^3.0.0"
   },
   "engines": {
-    "node": ">=4"
+    "node": ">=10"
   },
   "license": "Apache-2.0"
 }

Diff for: package.json

@@ -4,7 +4,7 @@
   "description": "IBM Watson Speech to Text and Text to Speech SDK for web browsers.",
   "main": "index.js",
   "engines": {
-    "node": ">=12"
+    "node": ">=10"
   },
   "scripts": {
     "watch-test": "karma start",