Added badges

Author: KoenZomers

README.md

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 # OneDriveAPI
 OneDrive API in .NET Standard 2.0, .NET Framework 4.5.2, .NET Framework 4.7.2 and .NET Core 2.0
 
+![](https://img.shields.io/github/issues/koenzomers/OneDriveAPI.svg) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
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 Easy to use lightweight framework to communicate with the OneDrive Personal and OneDrive for Business through either the Azure AD (api.onedrive.com & tenant-my.sharepoint.com/_api or the Azure AD V2.0 (graph.microsoft.com) endpoint. It allows communication through one unified piece of code with:
 
 - OneDrive Personal