Add Task 07 description

Task07/task07.txt

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+This is Task 07 of the Eudyptula Challenge
+------------------------------------------
+
+Great work with that misc device driver.  Isn't that a nice and simple
+way to write a character driver?
+
+Just when you think this challenge is all about writing kernel code,
+this task is a throwback to your second one.  Yes, that's right,
+building kernels.  Turns out that's what most developers end up doing:
+tons and tons of rebuilds, not writing new code.  Sad, but it is a good
+skill to know.
+
+The task this round is:
+  - Download the linux-next kernel for today.  Or tomorrow, just use
+    the latest one.  It changes every day so there is no specific one
+    you need to pick.  Build it.  Boot it.  Provide proof that you built
+    and booted it.
+
+What is the linux-next kernel?  Ah, that's part of the challenge.
+
+For a hint, you should read the excellent documentation about how the
+Linux kernel is developed in Documentation/development-process/ in the
+kernel source itself.  It's a great read, and should tell you all you
+never wanted to know about what Linux kernel developers do and how they
+do it.
+
+As always, please respond to this challenge with your id.  I know you
+know what it is.  I'll not even include it this time, I trust you.
+Don't make me feel that is a mistake.