Create a install script

In order to use 'pokemonsay', I need it installed somewhere. I think
a simple script is enough for that.

The install script copies the essential files to the '.config' folder
in 'home', and creates a script in the '~/bin' directory that will
run 'pokemonsay'.

I wonder if it could have been done in any better way.

install.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# Define install directories and names
+install_path="$HOME/.config/pokemonsay/"
+bin_install_path="$HOME/bin/"
+
+# Make sure the directories exist
+mkdir -p $install_path
+mkdir -p $install_path/cows/
+mkdir -p $bin_install_path
+
+# Copy the cows and the main script to the install path.
+cp ./cows/*.cow $install_path/cows/
+cp ./pokemonsay.sh $install_path
+
+# Create a main script in the home bin directory.
+cat > $bin_install_path/pokemonsay <<- EOF
+	#!/bin/sh
+
+	# This script changes to the pokemonsay installation directory,
+	# runs the main script for running the pokemonsay, and changes
+	# back to the previous directory.
+
+	current_path=`pwd`
+	cd $install_path
+	./pokemonsay.sh
+	cd \$current_path
+EOF
+
+# Change permission of the main script
+chmod +x $bin_install_path/pokemonsay
+
+echo "The files were installed to '$install_path'."
+echo "The 'pokemonsay' script was created in '$bin_install_path'."
+echo "It may be necessary to logout and login back again in order to have the 'pokemonsay' available in your path."