device: Add MCCMNC field from 2.5 spec

Author: emaraschio

device.go

@@ -25,6 +25,7 @@ type Device struct {
 	FlashVer   string    `json:"flashver,omitempty"`       // Flash version
 	Language   string    `json:"language,omitempty"`       // Browser language
 	Carrier    string    `json:"carrier,omitempty"`        // Carrier or ISP derived from the IP address
+	MCCMNC     string    `json:"mccmnc,omitempty"`         // Mobile carrier as the concatenated MCC-MNC code (e.g., "310-005" identifies Verizon Wireless CDMA in the USA).
 	ConnType   int       `json:"connectiontype,omitempty"` // Network connection type.
 	IFA        string    `json:"ifa,omitempty"`            // Native identifier for advertisers
 	IDSHA1     string    `json:"didsha1,omitempty"`        // SHA1 hashed device ID

device_test.go

@@ -37,6 +37,7 @@ var _ = Describe("Device", func() {
 			OSVer:      "6.1",
 			JS:         1,
 			ConnType:   ConnTypeCell,
+			MCCMNC:     "722-341",
 			DeviceType: DeviceTypeMobile,
 		}))
 	})

testdata/device.json

@@ -21,5 +21,6 @@
   "osv": "6.1",
   "js": 1,
   "connectiontype": 3,
+  "mccmnc": "722-341",
   "devicetype": 1
 }