Merge pull request #17688 from twbs/fix-17552

Travis: install npm dependencies using shrinkwrap

.travis.yml

@@ -12,6 +12,7 @@ before_install:
   - if [ "$TRAVIS_REPO_SLUG" = twbs-savage/bootstrap ]; then export TWBS_DO_VALIDATOR=0; fi
 install:
   - bundle install --deployment --jobs=3
+  - cp grunt/npm-shrinkwrap.json ./
   - npm install -g grunt-cli
   - npm install
 cache:

Gruntfile.js

@@ -509,7 +509,7 @@ module.exports = function (grunt) {
       if (err) {
         grunt.fail.warn(err);
       }
-      var dest = 'test-infra/npm-shrinkwrap.json';
+      var dest = 'grunt/npm-shrinkwrap.json';
       fs.renameSync('npm-shrinkwrap.json', dest);
       grunt.log.writeln('File ' + dest.cyan + ' updated.');
       done();