Here is something simpler still can't get it to work. in HTML 5 ajax uploader

 public function upfle(){

    $file = Input::file('files');
    $destinationPath = '/public/uploads/';
    $ext      = $file->guessClientExtension();  // Get real extension according to mime type
    $fullname = $file->getClientOriginalName(); // Client file name, including the extension of the client
    $hashname = date('H.i.s').'-'.md5($fullname).'.'.$ext; // Hash processed file name, including the real extension
    $upload_success = Input::file('files')->move($destinationPath, $hashname);

}

The code is working now

        /*Upload Images */
public function upload_file(){

    $file = Input::file('files');

    $allowed_ext = array('jpg','jpeg','png','gif');
    $ext= $file->guessClientExtension();  // Get real extension according to mime type

    $fullname = $file->getClientOriginalName(); // Client file name, including the extension of the client
    $hashname =substr_replace(sha1(microtime(true)), '', 12).'.'.$ext;

    $destinationPath = 'assets/uploads/';

    if(!in_array($ext,$allowed_ext)){
        echo json_encode(array('status'=>'Invalid File Extension'));
    }
    else{
        $upload_success = Input::file('files')->move($destinationPath, $hashname);
    }

}