Merge pull request watson-developer-cloud#178 from g-may/master

add listGraphs to Concept Insights

Author: germanattanasio

services/concept_insights/v2.js

@@ -87,6 +87,21 @@ ConceptInsightsAccounts.prototype.getAccountsInfo = function(params, callback) {
   return requestFactory(parameters, callback);
 };
 
+/**
+ * Returns a list of graphs that the authenticated user has read access to
+ */
+ConceptInsightsGraphs.prototype.listGraphs = function(params, callback) {
+  var parameters = {
+    options: {
+      url: '/v2/graphs',
+      method: 'GET',
+      json: true
+    },
+    defaultOptions: this._parent._options
+  };
+  return requestFactory(parameters, callback);
+};
+
 /**
  * Retrieves the metadata for one concept
  */