Add integration-tests to CI workflow

tests/integration/multi-nodejs-test/package.json

@@ -7,7 +7,7 @@
   "private": true,
   "license": "MIT",
   "dependencies": {
-    "handlebars": "file:../.."
+    "handlebars": "file:../../.."
   },
   "scripts": {
     "test": "node run-handlebars.js",

tests/integration/multi-nodejs-test/test.sh

@@ -14,7 +14,7 @@ cd "$( dirname "$( readlink -f "$0" )" )" || exit 1
 unset npm_config_prefix
 
 echo "Handlebars should be able to run in various versions of NodeJS"
-for node_version_to_test in 0.10 0.12 4 5 6 7 8 9 10 11 12 13 14 15; do
+for node_version_to_test in 0.10 0.12 4 5 6 7 8 9 10 11 12 13 14 15 16 17; do
 
     rm target node_modules package-lock.json -rf
     mkdir target