Move README to markdown

Move the README file to markdown so that it makes the github page look
prettier. I know that github repo is a mirror and not the official
repo, but I think it doesn't hurt to have it in markdown format.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Message-Id: <20160715043111.29007-1-bobby.prani@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

README.md

@@ -1,5 +1,5 @@
-         QEMU README
-         ===========
+QEMU
+---
 
 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
@@ -90,18 +90,17 @@ 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
 
- - qemu-devel@nongnu.org
-   http://lists.nongnu.org/mailman/listinfo/qemu-devel
- - #qemu on irc.oftc.net
+ - Mailing List: qemu-devel@nongnu.org
+ - Archives: http://lists.nongnu.org/mailman/listinfo/qemu-devel
+ - IRC: #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