chore(vendor): update jsonite rev, close #991 (#992)

vendor/vendor.json

@@ -34,10 +34,10 @@
 			"revisionTime": "2017-06-01T23:02:30Z"
 		},
 		{
-			"checksumSHA1": "gWQ2ncPI6qpTwS3e6/ShPwUP1uo=",
+			"checksumSHA1": "YY//OXgGrJOsiR8Cz1xexk/zwkc=",
 			"path": "github.com/json-iterator/go",
-			"revision": "b1afefe0580e6e818dd50da9593f477c80ccd67d",
-			"revisionTime": "2017-07-07T13:43:33Z"
+			"revision": "37ba1b32b5ed52dfaff0fe50d923d210c11c8daf",
+			"revisionTime": "2017-07-08T17:01:13Z"
 		},
 		{
 			"checksumSHA1": "9if9IBLsxkarJ804NPWAzgskIAk=",