Enable docs

docs.json

@@ -7,6 +7,8 @@
         "lib/include.js",
         "lib/model-builder.js",
         "lib/relations.js",
+        "lib/observer.js",
+        "lib/transaction.js",
         "lib/validations.js"
     ],
     "codeSectionDepth": 4,

lib/observer.js

@@ -3,6 +3,12 @@ var utils = require('./utils');
 
 module.exports = ObserverMixin;
 
+/**
+ * ObserverMixin class.  Use to add observe/notifyObserversOf APIs to other
+ * classes.
+ *
+ * @class ObserverMixin
+ */
 function ObserverMixin() {
 }
 

lib/transaction.js

@@ -8,6 +8,11 @@ var Transaction = require('loopback-connector').Transaction;
 
 module.exports = TransactionMixin;
 
+/**
+ * TransactionMixin class.  Use to add transaction APIs to a model class.
+ *
+ * @class TransactionMixin
+ */
 function TransactionMixin() {
 }
 
@@ -169,4 +174,6 @@ if (Transaction) {
   };
 }
 
+TransactionMixin.Transaction = Transaction;
+