Merge pull request watson-developer-cloud#492 from bastianentrup/patch-1

Update v1.js

[semver minor]

Author: nfriedly

discovery/v1.js

@@ -665,7 +665,7 @@ DiscoveryV1.prototype.query = function(params, callback) {
       method: 'GET',
       json: true,
       path: pick(params, ['environment_id', 'collection_id']),
-      qs: pick(params, ['query', 'natural_language_query', 'filter', 'aggregation', 'count', 'offset', 'return', 'sort', 'passages'])
+      qs: pick(params, ['query', 'natural_language_query', 'filter', 'aggregation', 'count', 'offset', 'return', 'sort', 'passages', 'highlight'])
     },
     requiredParams: ['environment_id', 'collection_id'],
     defaultOptions: this._options