Revert e5dfc5e8("Move README to markdown")

checkpatch.pl and other scripts fail without README. Revert
the rename for now; we may add README.md as a symlink later.

This reverts commit e5dfc5e8.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20160720203131.30229-2-bobby.prani@gmail.com
[PMM: tweaked commit message a little]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

README.md → README

-QEMU
----
+         QEMU README
+         ===========
 
 QEMU is a generic and open source machine & userspace emulator and
 virtualizer.
@@ -31,7 +31,7 @@ version 2. For full licensing details, consult the LICENSE file.
 
 
 Building
----
+========
 
 QEMU is multi-platform software intended to be buildable on all modern
 Linux platforms, OS-X, Win32 (via the Mingw64 toolchain) and a variety
@@ -51,7 +51,7 @@ Additional information can also be found online via the QEMU website:
 
 
 Submitting patches
----
+==================
 
 The QEMU source code is maintained under the GIT version control system.
 
@@ -71,7 +71,7 @@ the QEMU website
 
 
 Bug reporting
----
+=============
 
 The QEMU project uses Launchpad as its primary upstream bug tracker. Bugs
 found when running code built from QEMU git or upstream released sources
@@ -90,17 +90,18 @@ For additional information on bug reporting consult:
 
 
 Contact
----
+=======
 
 The QEMU community can be contacted in a number of ways, with the two
 main methods being email and IRC
 
- - Mailing List: qemu-devel@nongnu.org
- - Archives: http://lists.nongnu.org/mailman/listinfo/qemu-devel
- - IRC: #qemu on irc.oftc.net
+ - qemu-devel@nongnu.org
+   http://lists.nongnu.org/mailman/listinfo/qemu-devel
+ - #qemu on irc.oftc.net
 
 Information on additional methods of contacting the community can be
 found online via the QEMU website:
 
   http://qemu-project.org/Contribute/StartHere
 
+-- End