Merge pull request #207 from aizatto/patch-1

Adding "custom" key to Seeding instructions. Merging this since its a simple change to README.md

Author: AshanFernando

README.md

@@ -120,23 +120,24 @@ If `dynamodb.start.seed` is true, then seeding is performed after table migratio
 If you wish to use raw AWS AttributeValues to specify your seed data instead of Javascript types then simply change the variable of any such json files from `sources:` to `rawsources:`.
 
 ```yml
-dynamodb:
-  start:
-    seed: true
-
-  seed:
-    domain:
-      sources:
-        - table: domain-widgets
-          sources: [./domainWidgets.json]
-        - table: domain-fidgets
-          sources: [./domainFidgets.json]
-    test:
-      sources:
-        - table: users
-          rawsources: [./fake-test-users.json]
-        - table: subscriptions
-          sources: [./fake-test-subscriptions.json]
+custom:
+  dynamodb:
+    start:
+      seed: true
+
+    seed:
+      domain:
+        sources:
+          - table: domain-widgets
+            sources: [./domainWidgets.json]
+          - table: domain-fidgets
+            sources: [./domainFidgets.json]
+      test:
+        sources:
+          - table: users
+            rawsources: [./fake-test-users.json]
+          - table: subscriptions
+            sources: [./fake-test-subscriptions.json]
 ```
 
 ```bash