Add README and DOAP file

README: Add a short README with basic information.

gnome-shell.doap: Add project information in DOAP format expected
  for GNOME projects.

http://bugzilla.gnome.org/show_bug.cgi?id=591564

README

+GNOME Shell provides core user interface functions for the GNOME 3 desktop,
+like switching to windows and launching applications. GNOME Shell takes
+advantage of the capabilities of modern graphics hardware and introduces
+innovative user interface concepts to provide a visually attractive and
+easy to use experience.
+
+For more information about GNOME Shell, including instructions on how
+to build GNOME Shell from source and how to get involved with the project,
+see:
+
+ http://live.gnome.org/GnomeShell
+
+Bugs should be reported at http://bugzilla.gnome.org against the 'gnome-shell'
+product.
+
+License
+=======
+GNOME Shell is distributed under the terms of the GNU General Public License,
+version 2 or later. See the COPYING file for details.
+

gnome-shell.doap

+<Project xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
+         xmlns:foaf="http://xmlns.com/foaf/0.1/"
+         xmlns:gnome="http://api.gnome.org/doap-extensions#"
+         xmlns="http://usefulinc.com/ns/doap#">
+
+  <name xml:lang="en">GNOME Shell</name>
+  <shortdesc xml:lang="en">Next generation GNOME desktop shell</shortdesc>
+  <!--
+  <homepage rdf:resource="http://live.gnome.org/GnomeShell" />
+  -->
+  <mailing-list rdf:resource="http://mail.gnome.org/mailman/listinfo/gnome-shell-list" />
+  <download-page rdf:resource="http://download.gnome.org/sources/gnome-shell/" />
+  <bug-database rdf:resource="http://bugzilla.gnome.org/browse.cgi?product=gnome-shell" />
+
+  <category rdf:resource="http://api.gnome.org/doap-extensions#desktop" />
+
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>William Jon McCann</foaf:name>
+      <foaf:mbox rdf:resource="mailto:jmccann@redhat.com" />
+      <gnome:userid>mccann</gnome:userid>
+    </foaf:Person>
+  </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Owen Taylor</foaf:name>
+      <foaf:mbox rdf:resource="mailto:otaylor@redhat.com" />
+      <gnome:userid>otaylor</gnome:userid>
+    </foaf:Person>
+  </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Colin Walters</foaf:name>
+      <foaf:mbox rdf:resource="mailto:walters@verbum.org" />
+      <gnome:userid>cwalters</gnome:userid>
+    </foaf:Person>
+  </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Dan Winship</foaf:name>
+      <foaf:mbox rdf:resource="mailto:danw@gnome.org" />
+      <gnome:userid>danw</gnome:userid>
+    </foaf:Person>
+  </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Marina Zhurakhinskaya</foaf:name>
+      <foaf:mbox rdf:resource="mailto:marinaz@redhat.com" />
+      <gnome:userid>marinaz</gnome:userid>
+    </foaf:Person>
+  </maintainer>
+</Project>