Install i3-gaps on Ubuntu 16.04

i3-gaps-install.sh

#!/usr/bin/env bash
# Install i3-gaps on Ubuntu 16
set -e
set -x
sudo apt-get update && sudo apt-get -y upgrade
sudo apt-get install -y libxcb1-dev libxcb-keysyms1-dev libpango1.0-dev libxcb-shape0-dev libxcb-util0-dev libxcb-icccm4-dev libyajl-dev libstartup-notification0-dev libxcb-randr0-dev libev-dev libxcb-cursor-dev libxcb-xinerama0-dev libxcb-xkb-dev libxkbcommon-dev libxkbcommon-x11-dev autoconf xutils-dev dh-autoreconf

mkdir -p $HOME/repos
cd $HOME/repos

# Setup xcb-util-xrm 
if cd xcb-util-xrm; then \
 git pull;
else
 git clone --recursive https://github.com/Airblader/xcb-util-xrm.git xcb-util-xrm; cd xcb-util-xrm;
fi

./autogen.sh
make
sudo make install

# Setup i3-gaps
sudo ldconfig
sudo ldconfig -p

cd $HOME/repos

if cd i3-gaps; then
 git pull
else 
 git clone https://www.github.com/Airblader/i3 i3-gaps; cd i3-gaps;
fi

autoreconf --force --install
rm -Rf build/
mkdir build
cd build/
 ../configure --prefix=/usr --sysconfdir=/etc
make
sudo make install
which i3
ls -l /usr/bin/i3

thanks!
i'm getting some weird memory errors trying to run i3, though (this is probably related to me running ubuntu through WSL on windows 10)

Isn't running dist-upgrade overkill ?

Worked like a charm, just need to add
sudo apt install libxcb-shape0-dev

Isn't running dist-upgrade overkill ?

Yes, probably.

I updated the script with suggested changes here.