README.md: get source first (including submodules!)

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/README.md b/README.md
index 2e31696cea133fc10471b56e404c5f36878e1eff..bc73f6ff1c5ce49cf84399daa3d3a8f74a1b10bd 100644 (file)
--- a/README.md
+++ b/README.md
@@ -23,6 +23,22 @@ We do not require assignment of copyright to contribute code; code is
 contributed under the terms of the applicable license.
 
 
+Checking out the source
+=======================
+
+You can clone from github with
+
+        git clone git@github.com:ceph/ceph
+
+or, if you are not a github user,
+
+        git clone git://github.com/ceph/ceph
+
+Ceph contains many git submodules that need to be checked out with
+
+        git submodule update --init --recursive
+
+
 Build Prerequisites
 ===================