added in xml check_path and install_file, tried open .install file in the browser

[livewp] / applet / data / external_themes / xsnow2.xml

<theme>
    <name>Xsnow</name>
    <exec_path>/usr/bin/xsnow</exec_path>
    <category>Unknown</category>
     <icon_on>/usr/share/livewp/theme/Xsnow/icon.png</icon_on>       
     <icon_off>/usr/share/livewp/theme/Xsnow/icond.png</icon_off>     
    <check_path>/usr/bin/xsnow</check_path>   
</theme>