Fallback to CFBundleName if CFBundleDisplayName is nil (fastlane-community#64)

`CFBundleDisplayName` is not set in the default iOS project template.

See fastlane-community#62

Author: florianbuerger

lib/fastlane/plugin/aws_s3/actions/aws_s3_action.rb

@@ -168,7 +168,11 @@ def self.upload_ipa(s3_client, params, s3_region, s3_access_key, s3_secret_acces
         build_num = info['CFBundleVersion']
         bundle_id = info['CFBundleIdentifier']
         bundle_version = info['CFBundleShortVersionString']
-        title = CGI.escapeHTML(info['CFBundleDisplayName'])
+        display_name = info['CFBundleDisplayName']
+        if display_name.nil?
+          display_name = info['CFBundleName']
+        end
+        title = CGI.escapeHTML(display_name)
         full_version = "#{bundle_version}.#{build_num}"
 
         # Creating plist and html names