Meta: Update ReadMe with a new screenshot :^)

ReadMe.md

@@ -8,23 +8,27 @@ I always wanted to write my own operating system, but I never took it seriously.
 
 ## Screenshot
 
-![Screenshot as of 000ccc0](https://raw.githubusercontent.com/awesomekling/serenity/master/Meta/screenshot-000ccc0.png)
+![Screenshot as of 23263aa](https://raw.githubusercontent.com/awesomekling/serenity/master/Meta/screenshot-23263aa.png)
 
 ## Current features
 
 * Pre-emptive multitasking
 * Compositing window server (in userspace)
-* ext2 filesystem support
-* mmap()
+* ext2 filesystem
 * Unix-like libc and userland
+* mmap()
+* /proc filesystem
+* Local sockets
 * Pseudoterminals
 * Event-driven GUI library
 * Other stuff I can't think of right now...
 
 ## How do I get it to run?
 
-You need a cross-compiler for the i686-elf target.
-I've only tested this on an Ubuntu 18.10 host with GCC, so I'm not sure it works anywhere else.
+You need a freestanding cross-compiler for the i686-elf target (for the kernel) and another
+cross-compiler for the i686-pc-serenity target (for all the userspace stuff.)
+
+I've only tested this on an Ubuntu 18.10 host with GCC 8.2.0, so I'm not sure it works anywhere else.
 
 If you'd like to run it, here's how you'd get it to boot: