add categories to transactions

src/main/java/me/figo/models/Category.java

@@ -0,0 +1,29 @@
+package me.figo.models;
+
+
+import com.google.gson.annotations.Expose;
+
+public class Category {
+
+    @Expose
+    private int parent_id;
+
+    @Expose
+    private int id;
+
+    @Expose
+    private String name;
+
+    public int getParentId() {
+        return parent_id;
+    }
+
+    public int getId()   {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+}

src/main/java/me/figo/models/Transaction.java

@@ -128,6 +128,9 @@ public class Transaction {
     @Expose(serialize = false)
     private AdditionalTransactionInfo additional_info;
 
+    @Expose
+    private List<Category> categories;
+
     public Transaction() {
     }
 
@@ -244,6 +247,10 @@ public AdditionalTransactionInfo getAdditionalInfo() {
         return additional_info;
     }
 
+    public List<Category> getCategories()   {
+        return categories;
+    }
+
     /**
      * Helper type to represent the actual answer from the figo API
      */