Added remark that the NameConflictingBehavior only works with the Graph API

Author: KoenZomers

README.md

@@ -80,7 +80,7 @@ https://www.nuget.org/packages/KoenZomers.OneDrive.Api
 2.1.1.0 - January 4, 2019
 
 - Fixed a typo in NameConflictBeha*v*iorAnnotation. Thanks to Daniel Ethier for reporting this.
-- Implemented the ability to specify the NameConflictBehavior when uploading a file. The enumerator provides the option to overwrite the existing file, rename the file that is being uploaded or to fail the upload in the situation where a similarly named file already exists in the target location on OneDrive. Note that the SimpleUpload method does not support providing a NameConflictBehavior so it will always use the ResumableUpload method.
+- Implemented the ability to specify the NameConflictBehavior when uploading a file. The enumerator provides the option to overwrite the existing file, rename the file that is being uploaded or to fail the upload in the situation where a similarly named file already exists in the target location on OneDrive. Note that the SimpleUpload method does not support providing a NameConflictBehavior so it will always use the ResumableUpload method. It is also only implemented for the Graph API, so ensure to cast your oneDrive instace to OneDriveGraphApi to see the new argument.
 - Included the documentation XML file which should bring the inline comments to your application from where you add the NuGet or assembly reference
 
 2.1.0.1 - January 12, 2018