Merge pull request #69 from levidurfee/body-accessor

Added a `body` property to the endpoint classes with an accessor

tests/Fixtures/Endpoints/cachePurge.json

@@ -0,0 +1,8 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": {
+    "id": "023e105f4ecef8ad9ca31a8372d0c353"
+  }
+}