Added/updated some basic docs and cleaned up some things.

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+Hardening request packets are sent as crypto request packets (see crypto docs.)
+NOTE: currently only get nodes requests are tested in the code which is why there is only one test (more will be added soon.)
+
+All hardening requests must contain exactly 768 bytes of data. (The data sent must be padded with zeros if it is smaller than that.)
+
+1. Get the information (IP_port, client_id) of the node we want to test.
+2. Find a couple random nodes that is not that node (one for each test.)
+3. Send crypto request packets to each of these random nodes with the data being:
+
+[byte with value: 02 (get nodes test request)][struct Node_format (the node to test.)][client_id(32 bytes) the id to query the node with.][padding]
+
+4. The random node receives a packet.
+-The packet is a get nodes test request:
+    send a get_node request to that node with the id to query in the request.
+    when a send_node response is received, send the following response to the person who sent us the get nodes test request packet:
+        [byte with value: 03 (get nodes test response)][client_id(32 bytes): the id that the node was queried with][The list of nodes it responded with in IPv6 Node format (struct Node_Format)]
+    PROTIP: (get node requests and response contain an encrypted part that you can use to store information so that you don't 
+             have to store in your memory where/if to send back the response from the send node)
+
+5. Receive the test responses.
+-If the test(s) pass (the nodes behave in a satisfactory manner), make these nodes have priority over those who don't pass the test(s).