Track nodejs-5 and the kredits-github migration

Update the nodes submodule (nodejs-5 added, kredits-github moved off nodejs-4) and add the nodejs-5 client.

clients/nodejs-5.json

@@ -0,0 +1,4 @@
+{
+  "name": "nodejs-5",
+  "public_key": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxI1x2klSMk711UoLzW6I\nX42v+rw7tLlW7jX6zafL10KxRLdJN5Vz+0baF6gesRuWaq8kh9xAECkove5V4CsL\n867lok+gfitdOuk30Vs72UrGXyqJ12zTRHevwVz35Sf6W8swJ/UF3Oe+JyBjJkEv\nuBRSlMdfXI69oH5GV+V5Bh6AZHAsddSZQQbp/ph+KlsZ1f09Sv1W1zSkkf/7yOYk\nFBjE1zOLWoVbA63wuUmkq9LzwM4D8D+JY9TjvmkvyLVKM5wfaEAD04E/OLo1jYlF\nPX8W4RNOZeROQZzRcLwtUwuX/6yLZFjlkcbr+WRNV7uXjyrL7qoJ6umf2pkqPrIX\nIQIDAQAB\n-----END PUBLIC KEY-----\n"
+}