Update 'Creating a stargate'

Creating-a-stargate.md

@@ -4,3 +4,60 @@ Sections:
 * Gate networks
 * Fixed gates
 * Hidden Gates
+
+## Building a gate:
+
+There are currently three default gate configurations. They all use the same structure as a standard nether portal. One
+gate is using obsidian blocks, one is using end bricks and the last uses sea lanterns. Only the sea lantern one can be
+used underwater. You must put a sign on one of the blocks in the middle of the layout to activate the portal (see next
+section). See the Custom Gate Layout section to learn how to add custom gates.
+
+```
+    OO 
+   O  O - These are Obsidian blocks, End bricks or Sea Lanterns. You need 10.
+   O  O - Place a sign on either of these two middle blocks.
+   O  O
+    OO
+```
+
+### Sign Layout:
+
+- Line 1: Gate Name (Max 11 characters)
+- Line 2: Destination Name \[Optional] (Max 11 characters, used for fixed-gates only)
+- Line 3: Network name \[Optional] (Max 11 characters)
+- Line 4: Options \[Optional] :
+    - 'A' for always-on fixed gate
+    - 'H' for hidden networked gate
+    - 'P' for a private gate
+    - 'F' for a free gate
+    - 'B' is for a backwards facing gate (You will exit the back)
+    - 'S' is for showing an always-on gate in the network list
+    - 'N' is for hiding the network name
+    - 'R' is for random gates. These follow standard permissions of gates, but have a random exit location every time a
+      player enters.
+    - 'U' is for a gate connecting to another through bungee
+
+The options are the single letter, not the word. So to make a private hidden gate, your 4th line would be 'PH'.
+
+#### Gate networks:
+
+- Gates are all part of a network, by default this is "central".
+- You can specify (and create) your own network on the third line of the sign when making a new gate.
+- Gates on one network will not see gates on the second network, and vice versa.
+- Gates on different worlds, but in the same network, will see each other.
+- If the gate is a bungee gate, the network name should be the name of the server as displayed when typing /servers
+
+#### Fixed gates:
+
+- Fixed gates go to only one set destination.
+- Fixed gates can be linked to other fixed gates, or normal gates. A normal gate cannot open a portal to a fixed gate,
+  however.
+- To create a fixed gate, specify a destination on the second line of the stargate sign.
+- Set the 4th line of the stargate sign to "A" to enable an always-open fixed gate.
+- A bungee gate is always automatically a fixed gate
+
+#### Hidden Gates:
+
+- Hidden gates are like normal gates, but only show on the destination list of other gates under certain conditions.
+- A hidden gate is only visible to the creator of the gate, or somebody with the stargate.hidden permission.
+- Set the 4th line of the stargate sign to 'H' to make it a hidden gate.