Add Configure Plist Screenshot and documentation

Author: sandorfr

Extension/Screenshots/Configure-PlistPatch.png

@@ -9,6 +9,7 @@ Visual Studio Team Services Build and Release Management extensions that help yo
 * **[Patch JSON Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-JSON-Files)**: Patch JSON files using JSON patch syntax
 * **[Patch XML Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-XML-Files)**: Patch XML files using XPath and JSON patch syntaxes
 * **[Patch YAML Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-YAML-Files)**: Patch YAML files using JSON patch syntax
+* **[Patch PLIST Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-PLIST-Files)**: Patch PLIST files using JSON patch syntax
 
 ## Steps
 

Extension/overview.md

@@ -13,6 +13,7 @@ Visual Studio Team Services Build and Release Management extensions that help yo
 * **[Patch JSON Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-JSON-Files)**: Patch JSON files using JSON patch syntax
 * **[Patch XML Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-XML-Files)**: Patch XML files using XPath and JSON patch syntaxes
 * **[Patch YAML Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-YAML-Files)**: Patch YAML files using JSON patch syntax
+* **[Patch PLIST Files](https://github.com/geeklearningio/gl-vsts-tasks-file-patch/wiki/Patch-PLIST-Files)**: Patch PLIST files using JSON patch syntax
 
 ## To contribute