Created Networking (markdown)

Networking.md

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+In order to use sockets in your homebrew application, you'll first need to initialize the SOC service by calling `SOC_Initialize()`. When your application finishes, use `SOC_Shutdown()` to close the service gracefully. The headers and documentation for these functions can be viewed here: [3ds/services/soc.h](https://github.com/smealum/ctrulib/blob/master/libctru/include/3ds/services/soc.h)
+
+### Example
+
+```c
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <3ds.h>
+
+int main()
+{
+    // Initialize graphics and console
+    gfxInitDefault();
+    gfxSet3D(false);
+    consoleInit(GFX_BOTTOM, NULL);
+
+    // Initialize SOC
+    SOC_Initialize((u32*)memalign(0x1000, 0x128000), 0x128000);
+
+    // Do networking stuff
+    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    // ...
+    close(sockfd);
+
+    // Cleanup SOC
+    SOC_Shutdown();
+
+    return 0
+}
+```