Implement download_node and download_npm bash scripts

scripts/download_node.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# Example:
+#		$ ./download_node darwin x64 v0.12.0 ../bin/node
+
+OS=$1
+ARCH=$2
+NODE_VERSION=$3
+OUTPUT=$4
+
+if [ -z $OS ] || [ -z $ARCH ] || [ -z $NODE_VERSION ] || [ -z $OUTPUT ]; then
+  echo "Usage: $0 <os> <arch> <node_version> <output>"
+  exit 1
+fi
+
+NODE_DIST_URL="http://nodejs.org/dist"
+CURL="curl -#"
+PACKAGE="node-$NODE_VERSION-$OS-$ARCH"
+
+echo ""
+echo "Downloading $PACKAGE"
+echo ""
+
+if [ "$OS" == "win32" ]; then
+	if [ "$arch" == "x86" ]; then
+		$CURL $NODE_DIST_URL/$NODE_VERSION/node.exe -o $OUTPUT/$PACKAGE.exe
+	else
+		$CURL $NODE_DIST_URL/$NODE_VERSION/$ARCH/node.exe -o $OUTPUT/$PACKAGE.exe
+	fi
+else
+	$CURL $NODE_DIST_URL/$NODE_VERSION/$PACKAGE.tar.gz | tar xz -C $OUTPUT/
+	cp $OUTPUT/$PACKAGE/bin/node $OUTPUT/$PACKAGE.bin
+	rm -rf $OUTPUT/$PACKAGE
+fi

scripts/download_npm.sh

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+#!/bin/bash
+
+# Example:
+#		$ ./download_npm v2.5.1 ./bin/npm
+
+NPM_VERSION=$1
+OUTPUT=$2
+
+if [ -z $NPM_VERSION ] || [ -z $OUTPUT ]; then
+  echo "Usage: $0 <npm_version> <output_directory>"
+  exit 1
+fi
+
+echo ""
+echo "Downloading npm@$NPM_VERSION"
+echo ""
+
+mkdir -p $OUTPUT
+
+# http://stackoverflow.com/questions/11497457/git-clone-without-git-directory
+git clone --depth=1 --branch $NPM_VERSION --single-branch git@github.com:npm/npm.git $OUTPUT
+rm -rf $OUTPUT/.git