Magento – automatically email invoice and shipment after creating

I'd go the route of creating an event-observer for sales_order_shipment_save_after:

So in app/code/local/Namespace/Module/etc/config.xml:

...
<events>
    <sales_order_shipment_save_after>
    <observers>
        <namespace_module>
        <type>singleton</type>
        <class>Namespace_Module_Model_Observer</class>
        <method>autoInvoice</method>
        </namespace_module>
    </observers>
    </sales_order_shipment_save_after>
</events>
....

and in app/code/local/Namespace/Module/Model/Observer.php:

<?php
class Namespace_Module_Model_Observer
{
   public function autoInvoice($observer) {
       $shipment = $observer->getEvent()->getShipment();
       $order = $shipment->getOrder();
       if($order->canInvoice())
       {
           $invoice = Mage::getModel('sales/service_order', $order)->prepareInvoice();
           $invoice->setRequestedCaptureCase(Mage_Sales_Model_Order_Invoice::CAPTURE_ONLINE);
           $invoice->register();
           $transactionSave = Mage::getModel('core/resource_transaction')
           ->addObject($invoice)
           ->addObject($invoice->getOrder());
           $transactionSave->save();
       }
   }
}

Then you should be all set.

As you said ,you want to send shipment mail after create Invoice.
For this ,you need change the event from sales_order_save_after to sales_order_invoice_register which is better ...

See more at

https://stackoverflow.com/questions/7661455/whats-the-event-name-when-you-create-a-new-invoice-in-magento

Run method after capturing invoice

Also Some issue in config.xml

<class>Namespace_Invoicer_Model_Observer</class>

Should be from Namespace_Invoicer_Model_Observer to invoicer/observer Also Observer file implementOrderStatus() , $Order have wrong parameter

public function implementOrderStatus ($Observer)
{
    $order =$Observer->getEvent()->getOrder ();

    if ($this->_getPaymentMethod ($order) == 'ccsave') {

            $this->_processOrderStatus ($order->getIncrementId());

    return $this;
}

For Doing shipment on Order all items try below code ,so processOrderStatus() code should be

public function processOrderStatus($orderIncrementId){
$itemsQty = array();
$comment = null;
$email = true;
$includeComment = false;

$order = Mage::getModel('sales/order')->loadByIncrementId($orderIncrementId);
if ($order->canShip()){

$itemsQty = array();
foreach ($order->getAllItems() as $item) {
    $itemsQty[$item->getId()] = $item->getQtyOrdered();
    }

     $shipment = $order->prepareShipment($itemsQty);

}
     $shipment = $order->prepareShipment($itemsQty);

        if ($shipment) {
            $shipment->register();
            $shipment->addComment($comment, $email && $includeComment);
            if ($email) {
                $shipment->setEmailSent(true);
            }
            $shipment->getOrder()->setIsInProcess(true);
            try {
                $transactionSave = Mage::getModel('core/resource_transaction')
                    ->addObject($shipment)
                    ->addObject($shipment->getOrder())
                    ->save();
                $shipment->sendEmail($email, ($includeComment ? $comment : ''));
            } catch (Mage_Core_Exception $e) {
                var_dump( $e->getMessage());
            }
           echo $shipment->getIncrementId();
        }

}