Update README.md

Author: slathrop

README.md

@@ -25,6 +25,12 @@ git config --global user.name "YourUserName"
 git config --global user.email YourEmailAddress@example.com
 ```
 
+Finally, if you need to sign-in to GitHub repos with different credentials (say, with a work account to access private repos and also with a personal account to access public repos) you'll need to tell the [Credential Manager](https://github.com/Microsoft/Git-Credential-Manager-for-Windows/releases/latest) to use the full path of the repo instead of just the host (Github.com).
+
+```bash
+git config –global credential.useHttpPath true
+```
+
 ## Batch File Documentation
 
 To use a batch file, simply enter its name at the Windows command prompt. The [Cmder](http://cmder.net/) console emulator (Full download with Git for Windows) is recommended over the built-in cmd.exe shell.