cordova plugin add https://github.com/EddyVerbruggen/SocialSharing-PhoneGap-Plugin.git

cordova plugin add https://github.com/gitawego/cordova-screenshot.git

$ cordova prepare

<script>
    function sharePhoto() {
     var imageLink;
            console.log('Calling from CapturePhoto');
            navigator.screenshot.save(function(error,res){
            if(error){
            console.error(error);
            }else{
            console.log('ok',res.filePath); //should be path/to/myScreenshot.jpg
            imageLink= res.filePath;
            window.plugins.socialsharing.shareVia('com.apple.social.facebook', 'Message via FB', null, imageLink, null, function(){console.log('share ok')}, function(msg) {alert('error: ' + msg)})
     }
     },'jpg',50,'myScreenShot');
    }
</script>

<button onclick="sharePhoto();">Share Screenshot</button>

cordova plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-console.git