Allow NLC create classifier from csv template

Author: chughts

README.md

@@ -14,6 +14,8 @@ Node-RED Watson Nodes for IBM Cloud
 - TSS Node fix to add visibility check on tts.voices and not stt.models
 - Assistant V1 Workspace Manager Node updated to reflect that in update mode, updated fields
 need a new_ prefix in their keys as part of the input json.
+- NLC Node - migrate off deprecated methods
+- NLC Node - Allow create of a classier to be based on a csv template node.
 
 ### New in version 0.7.5
 - Bump SDK Dependency to 3.15.0

services/natural_language_classifier/v1.html

@@ -54,7 +54,7 @@
             <option value="classify">Classify</option>
             <option value="create">Train</option>
 			      <option value="remove">Remove</option>
-		        <option value="list">List</option>
+		        <option value="listClassifiers">List</option>
         </select>
     </div>
     <div class="form-row mode classify">

services/natural_language_classifier/v1.js

@@ -140,7 +140,10 @@ module.exports = function(RED) {
     node.checkForCreate = function(msg, config) {
       if ('create' !== config.mode) {
         return Promise.resolve(null);
-      } else {
+      } else if ('string' === typeof msg.payload) {
+        return Promise.resolve(null);
+      }
+      else {
         var p = node.openTemp()
           .then(function(info) {
             return node.streamFile(msg, config, info);
@@ -167,11 +170,16 @@ module.exports = function(RED) {
         }
         break;
       case 'create':
-        params.training_data = fs.createReadStream(info.path);
+        if ('string' === typeof msg.payload) {
+          params.training_data = msg.payload;
+        } else {
+          params.training_data = fs.createReadStream(info.path);
+        }
+
         params.language = config.language;
         break;
       case 'remove':
-      case 'list':
+      case 'listClassifiers':
         params.classifier_id = msg.payload;
         if (msg.nlcparams && msg.nlcparams.classifier_id) {
           params.classifier_id = msg.nlcparams.classifier_id;