Added Collapse-O-Matic plugin to hide dmesg logs

I’ve added Collapse-O-Matic plugin to wordpress recently. It provided “expand” shortcut that wraps content into collapsible div. I’ve used it to hide all dmesg logs in my blog. It should have helped to give more readable and cleaner look for it. If you want to look at the dmesg, just click on dmesg arrow and it will expand the text. By clicking it again, you will hide it back.