Remove static version declaration. Refactor dynamic version declaration

Mobile Buy SDK/Mobile Buy SDK/Data/BUYClient+Internal.h

@@ -29,7 +29,6 @@
 #import "BUYSerializable.h"
 
 static NSString * const BUYShopifyErrorDomain = @"BUYShopifyErrorDomain";
-static NSString * const BUYClientVersionString = @"2.0";
 static NSString * const BUYClientCustomerAccessToken = @"X-Shopify-Customer-Access-Token";
 
 typedef void (^BUYClientRequestJSONCompletion)(NSDictionary *json, NSHTTPURLResponse *response, NSError *error);

Mobile Buy SDK/Mobile Buy SDK/Data/BUYClient.h

@@ -121,7 +121,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, strong, readonly, nonnull) NSString *appId;
 
 /**
- *  Application name to attribute orders to.  Defaults to app bundle name (CFBundleName)
+ *  Application name to attribute orders to.  Uses the app bundle name from info.plist (CFBundleName)
  */
 @property (nonatomic, strong, nonnull) NSString *applicationName;
 

Mobile Buy SDK/Mobile Buy SDK/Data/BUYClient.m

@@ -71,20 +71,35 @@ static NSString * const BUYClientJSONMimeType = @"application/json";
 
 #pragma mark - Headers -
 
+- (NSBundle *)sdkBundle
+{
+	return [NSBundle bundleForClass:[self class]];
+}
+
+- (NSString *)sdkVersion
+{
+	return [[self sdkBundle] objectForInfoDictionaryKey:(id)kCFBundleVersionKey] ?: @"";
+}
+
+- (NSBundle *)appBundle
+{
+	return [NSBundle mainBundle];
+}
+
 - (NSString *)applicationName
 {
-	return [[NSBundle mainBundle] infoDictionary][@"CFBundleName"] ?: @"";
+	return [[self appBundle] objectForInfoDictionaryKey:(id)kCFBundleNameKey] ?: @"";
 }
 
-- (NSString *)bundleIdentifier
+- (NSString *)appBundleIdentifier
 {
-	return [[NSBundle mainBundle] bundleIdentifier];
+	return [[self appBundle] bundleIdentifier];
 }
 
 - (NSDictionary *)additionalHeaders
 {
 	return @{
-			 @"User-Agent": [NSString stringWithFormat:@"Mobile Buy SDK iOS/%@/%@", BUYClientVersionString, [self bundleIdentifier]]
+			 @"User-Agent": [NSString stringWithFormat:@"Mobile Buy SDK iOS/%@/%@", [self sdkVersion], [self appBundleIdentifier]]
 			 };
 }