Here's a sample for cc 2014 that should solve your query . Here CC2014 is a folder that contains my plug-ins kept in the same hierarchy as that of the eclipse project.
<?xml version="1.0" encoding="UTF-8" standalone="no"?><macromedia-extension id="com.abc.def" name="com.abc.def" requires-restart="true" version="1.0.0"> <author name="asdasd."/> <description><![CDATA[hi]]></description> <license-agreement><![CDATA[hi]]></license-agreement> <products> <product maxversion="10.9" name="InDesign" version="10.0"/> </products> <files> <file destination="$indesign/Plug-Ins/<custom folder>" file-type="plugin" platform="win" products="InDesign" source="CC2014/win32/abc.pln"/> <file destination="$indesign/Plug-Ins/<custom folder>" file-type="ordinary" platform="win" products="InDesign" source="CC2014/win32/(abc Resources)"/> <file destination="$indesign/Plug-Ins/<custom folder>" file-type="plugin" platform="win" products="InDesign64" source="CC2014/x64/abc.pln"/> <file destination="$indesign/Plug-Ins/<custom folder>" file-type="ordinary" platform="win" products="InDesign64" source="CC2014/x64/(abc Resources)"/> <file destination="$indesign/Plug-Ins/<custom folder>" file-type="plugin" platform="mac" products="InDesign" source="CC2014/mac/abc.InDesignPlugin"/> <file destination="" file-type="CSXS" products="" source="your extension.zxp"/> </files></macromedia-extension>