finish the multinode ubuntu k8s setup script and guide ,tested ok

cluster/ubuntu-cluster/build.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# simple use the sed to replace some ip settings on user's demand
+# Run as root only
+
+# author @resouer
+set -e
+
+# check root
+if [ "$(id -u)" != "0" ]; then
+    echo >&2 "Please run as root"
+    exit 1
+fi
+
+mkdir -p binaries
+
+# flannel
+echo "Download & build flanneld ..."
+apt-get install linux-libc-dev
+if [ ! -d flannel ] ; then
+    echo "flannel does not exsit, cloning ..."
+    git clone https://github.com/coreos/flannel.git
+fi
+
+pushd flannel
+docker run -v `pwd`:/opt/flannel -i -t google/golang /bin/bash -c "cd /opt/flannel && ./build"
+popd
+cp flannel/bin/flanneld binaries/
+
+# ectd
+echo "Download etcd release ..."
+ETCD_V="v2.0.0"
+ETCD="etcd-${ETCD_V}-linux-amd64"
+if [ ! -f etcd.tar.gz ] ; then
+    curl -L  https://github.com/coreos/etcd/releases/download/$ETCD_V/$ETCD.tar.gz -o etcd.tar.gz
+    tar xzf etcd.tar.gz
+fi
+cp $ETCD/etcd $ETCD/etcdctl binaries
+
+# kuber
+echo "Download kubernetes release ..."
+if [ ! -f kubernetes.tar.gz ] ; then
+    curl -L https://github.com/GoogleCloudPlatform/kubernetes/releases/download/v0.10.1/kubernetes.tar.gz -o kubernetes.tar.gz
+    tar xzf kubernetes.tar.gz
+fi
+pushd kubernetes/server
+tar xzf kubernetes-server-linux-amd64.tar.gz
+popd
+cp kubernetes/server/kubernetes/server/bin/* binaries/
+
+rm -rf flannel kubernetes* etcd*
+echo "Done! All your commands locate in ./binaries dir"