add price to BUO

Author: ahmednawar

Branch-SDK/Branch-SDK/BranchUniversalObject.h

@@ -33,6 +33,7 @@ typedef NS_ENUM(NSInteger, ContentIndexMode) {
 @property (nonatomic, strong) NSArray *keywords;
 @property (nonatomic, strong) NSDate *expirationDate;
 @property (nonatomic, strong) NSString *spotlightIdentifier;
+@property (nonatomic, assign) CGFloat price;
 
 - (instancetype)initWithCanonicalIdentifier:(NSString *)canonicalIdentifier;
 - (instancetype)initWithTitle:(NSString *)title;

Branch-SDK/Branch-SDK/BranchUniversalObject.m

@@ -347,7 +347,9 @@ - (NSDictionary *)getParamsForServerRequest {
     [self safeSetValue:self.keywords forKey:BRANCH_LINK_DATA_KEY_KEYWORDS onDict:temp];
     [self safeSetValue:@(1000 * [self.expirationDate timeIntervalSince1970]) forKey:BRANCH_LINK_DATA_KEY_CONTENT_EXPIRATION_DATE onDict:temp];
     [self safeSetValue:self.type forKey:BRANCH_LINK_DATA_KEY_CONTENT_TYPE onDict:temp];
-    
+    if (self.price) {
+        [self safeSetValue:[NSNumber numberWithFloat:self.price] forKey:BNCPurchaseAmount onDict:temp];
+    }
     [temp addEntriesFromDictionary:[self.metadata copy]];
     return [temp copy];
 }