Add markdown to third_party/pkg

third_party/pkg/markdown/LICENSE

Index: third_party/pkg/markdown/LICENSE
diff --git a/runtime/third_party/double-conversion/LICENSE b/third_party/pkg/markdown/LICENSE
similarity index 95%
copy from runtime/third_party/double-conversion/LICENSE
copy to third_party/pkg/markdown/LICENSE
index 933718a9ef9dae4cb4afa56e490211760d8a949f..81764fd4e9a6456569ec5f618a562b9881e95e4c 100644
--- a/runtime/third_party/double-conversion/LICENSE
+++ b/third_party/pkg/markdown/LICENSE
@@ -1,8 +1,7 @@
-Copyright 2006-2011, the V8 project authors. All rights reserved.
+Copyright 2012, the Dart project authors. All rights reserved.
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
-
     * Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
     * Redistributions in binary form must reproduce the above
@@ -12,7 +11,6 @@ met:
     * Neither the name of Google Inc. nor the names of its
       contributors may be used to endorse or promote products derived
       from this software without specific prior written permission.
-
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -23,4 +21,4 @@ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.