add install script

install.bash

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Adds $1 to ~/.bashrc if not already present
+function _add_to_config {
+    if ! grep "$1" ~/.bashrc > /dev/null; then
+        echo "$1" >> ~/.bashrc
+    fi
+}
+
+# Link files
+basedir="$(dirname "$(realpath "$0")")"
+mkdir -p ~/.local/{bin,share/bash-completion/completions}
+ln -frs "${basedir}/gra" ~/.local/bin/gra
+echo "Created link '~/.local/bin/gra'"
+ln -frs "${basedir}/gra_completion.bash" ~/.local/share/bash-completion/completions/gra
+echo "Created link '~/.local/share/bash-completion/completions/gra'"
+
+# Modify bashrc
+touch ~/.bashrc
+_add_to_config "export PATH=\$PATH:${HOME}/.local/bin"
+_add_to_config "source ${HOME}/.local/share/bash-completion/completions/gra"
+echo "Updated '~/.bashrc'"
+
+echo
+echo "Source ~/.bashrc to use gra"
+echo "To update gra in future execute 'git pull' in '${basedir}'"