Merge pull request #41 from UnityTech/PPS-381-3

[PPS-361] Add Clickbrowser

Author: CarolynU

impression.go

@@ -25,6 +25,7 @@ type Impression struct {
 	Pmp               *Pmp           `json:"pmp,omitempty"`               // A reference to the PMP object containing any Deals eligible for the impression object.
 	DisplayManager    string         `json:"displaymanager,omitempty"`    // Name of ad mediation partner, SDK technology, etc
 	DisplayManagerVer string         `json:"displaymanagerver,omitempty"` // Version of the above
+	Clickbrowser      int            `json:"clickbrowser"`                // Indicates the type of browser opened upon clicking the creative in an app, where 0 = embedded, 1 = native
 	Instl             int            `json:"instl,omitempty"`             // Interstitial, Default: 0 ("1": Interstitial, "0": Something else)
 	TagID             string         `json:"tagid,omitempty"`             // IDentifier for specific ad placement or ad tag
 	BidFloor          float64        `json:"bidfloor,omitempty"`          // Bid floor for this impression in CPM