Add more information to the Serial information print by EmotiBit

[nitin710]

• the network that the EmotiBit is connected to in the info-print on serial

  [{"info":{
  "source_id":"EmotiBit FeatherWing",
  "hardware_version":"V04a",
  "sku":"MD",
  "device_id":"MD-V4-0000419",
  "feather_version":"Adafruit Feather HUZZAH32",
  "feather_wifi_mac_addr":"dc:0b:6b:7e:b9:94",
  "firmware_version":"1.9.0.feat-sdCardWiFiCredentials.15",
  "firmware_variant":"EmotiBit_stock_firmware",
  "ip_address":"172.20.10.11"
  "Connection status": "connected" or "not connected"
  "SSID": "something" // if connected
  }}]

• FW version of AT-WINC for Feather M0