Add fallback between serverUrl/serverURL

This was a typo from the original ms module so let's add a fallback to keep good compatibility

Author: Minishlink

android/app/src/main/java/com/appzung/codepush/react/CodePush.java

@@ -100,6 +100,9 @@ private CodePush(Context context) {
         }
 
         String serverUrlFromStrings = getCustomPropertyFromStringsIfExist("ServerUrl");
+        if (serverUrlFromStrings == null) {
+            serverUrlFromStrings = getCustomPropertyFromStringsIfExist("ServerURL");
+        }
         if (serverUrlFromStrings != null) {
             CodePushUtils.log("Executing CodePush with a custom server URL.");
             mServerUrl = serverUrlFromStrings;

ios/CodePush/CodePushConfig.m

@@ -35,6 +35,10 @@ - (instancetype)init
     NSString *buildVersion = [infoDictionary objectForKey:(NSString *)kCFBundleVersionKey];
     NSString *releaseChannelPublicId = [infoDictionary objectForKey:@"CodePushReleaseChannelPublicId"];
     NSString *serverURL = [infoDictionary objectForKey:@"CodePushServerURL"];
+    if (!serverURL) {
+        serverURL = [infoDictionary objectForKey:@"CodePushServerUrl"];
+    }
+
     NSString *publicKey = [infoDictionary objectForKey:@"CodePushSigningPublicKey"];
 
     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];