Mount devtmpfs filesystem for NodeOS & updated documentation

Author: piranna

README.md

@@ -7,18 +7,22 @@ system when there's no more running ones. It was initially based on
 
 ## Why?
 
-NodeOS is an operating system build entirely on Node.js, also it's `PID 1` init
-[century](https://github.com/NodeOS/node-century). Problem is, since v0.11.15
-the version of v8 was changed from v3.26.33 to v3.28.73, and a bug was inserted
-that forbid to use it as `PID 1` anymore. Due to this, we need to use a more
-"traditional" C-based init executable.
+NodeOS is an operating system build entirely on Node.js, and also it was its
+`PID 1` init process ([century](https://github.com/NodeOS/node-century)).
+Problem is, on v0.11.15 Node.js upgraded the version of v8 from v3.26.33 to
+v3.28.73, and a regression was introducced that don't allow to use it as `PID 1`
+anymore, seems related to the need of having a `devtmpfs` filesystem mounted on
+`/dev` and not only defined a `/dev/console` device file. Due to this, we need
+to mount it previously to any instance of Node.js can be executed, but also we
+can this way control better the processes termination and cleanly shutdown the
+system instead of get a *Kernel panic*.
 
 ## How?
 
-There are 3 signals that sinit will act on.
+There are 3 signals that NodeOS-init will act on.
 
 * *SIGCHLD*: reap children
-* *SIGINT*:  reboots the machine (or alternatively via ctrl-alt-del)
+* *SIGINT*:  reboots the machine (or alternatively via `ctrl-alt-del`)
 * *SIGTERM*: send the `SIGTERM` to all its child processes and later shutdown
 
 It also shutdown the machine when it detect there are no more child processes.

init.c

@@ -2,6 +2,7 @@
 
 #include <linux/reboot.h>
 
+#include <sys/mount.h>
 #include <sys/reboot.h>
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -148,6 +149,11 @@ int main(int argc, char* argv[])
 	// Prepare signals
 	sigset_t set = prepareSignals();
 
+	// Mount `devtmpfs` filesystem in `/dev`. This is mandatory for Node.js on
+	// NodeOS, but it's fairly common so it doesn't hurts (too much...)
+	if(mount("devtmpfs", "/dev", "devtmpfs", 0, NULL) == -1)
+		perror("mount");
+
 	// Exec init command
 	spawn(getCommand(argc, argv));