Install ble.sh in setup script.

setup.sh

@@ -4,3 +4,9 @@ git submodule update --init
 . .bash_aliases
 ,init
 go install github.com/arl/gitmux@latest
+
+# Install bash line editor for auto completion.
+git clone --recursive --depth 1 --shallow-submodules https://github.com/akinomyoga/ble.sh.git
+make -C ble.sh install PREFIX=$(pwd)/.local
+echo 'source -- ~/.local/share/blesh/ble.sh' >> .bash_aliases
+rm -rf ble.sh