Move installation scripts to install/ dir

install/git-prompt.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -E -o errexit -o nounset -o pipefail
+set -x
+
+GIT_PROMPT_PATH=${GIT_PROMPT_PATH:-$LWS/opt/bash-git-prompt}
+
+readonly REPO="https://github.com/magicmonty/bash-git-prompt.git"
+
+if [[ ! -d "$GIT_PROMPT_PATH" ]]; then
+  git clone "$REPO" "$GIT_PROMPT_PATH" --depth=1
+fi
+