Bash Shell script to install Ansible via Git

install_ansible.sh

#!/usr/bin/env bash

# Usage Example:
# ./install_ansible.sh 'v1.1' path/to/local/ansible/hosts/file
# Look up https://github.com/ansible/ansible for version tags to use

versionTag=$1
ansibleHosts=$2

# Install Git
# The most stable way of getting the latest version of ansible to get it directly from the git repo
echo "[Install Ansible] Install Git"
sudo apt-get install -y git-core

# Install Ansible Dependencies
echo '[Install Ansible] Install dependencies'
sudo apt-get install -y python-setuptools
sudo easy_install jinja2 
sudo easy_install pyyaml
sudo easy_install paramiko

# Install Ansible
echo "[Install Ansible] Go to Home folder"
cd ~
echo '[Install Ansible] Git Clone Ansible'
git clone https://github.com/ansible/ansible.git ansible
cd ansible

echo '[Install Ansible] Checkout to desired tag'
git checkout $versionTag

echo '[Install Ansible] Make and Install'
sudo make install

echo '[Install Ansible] Clean up!'
cd ..
sudo rm -rf ansible

echo '[Install Ansible] Copy Ansible HOSTS'
sudo mkdir -p /etc/ansible && sudo cp -fr $ansibleHosts /etc/ansible/hosts

echo '[Install Ansible] Update Permissions on hosts file'
# Giving exec permission causes issues when running ansible
sudo chmod 644 /etc/ansible/hosts

echo '[Install Ansible] Export ANSIBLE_HOST path'
export ANSIBLE_HOSTS=/etc/ansible/hosts

echo '[Install Ansible] Done!'

can someone please tell me what should i pass as $1?
@mechastorm can you please tell me why to 'git checkout' here?
i have passed v2.7.10, like
bash script-name v2.7.10 , but it is giving me error -->
[You are in 'detached HEAD' state.]........
......Traceback (most recent call last):
File "packaging/release/versionhelper/version_helper.py", line 9, in
from packaging.version import Version, VERSION_PATTERN
ImportError: No module named packaging.version
Makefile:40: *** "version_helper failed". Stop.]