docs: Add installation steps + script (#300)

* docs: Add installation steps + script

README.md

@@ -22,7 +22,13 @@ Install dependencies:
 - `xorg-dev`
 - `libgl1-mesa-dev`
 
-Grab a binary from the [latest release](https://github.com/liamg/darktile/releases/latest).
+Grab a binary from the [latest release](https://github.com/liamg/darktile/releases/latest), `chmod +x` it and place it in your `$PATH`.
+
+If you're too lazy to do the above and you like to live life on the edge, you can pipe this script to sudo:
+
+```bash
+curl -s "https://raw.githubusercontent.com/liamg/darktile/main/scripts/install.sh" | sudo bash
+```
 
 ## Configuration
 

scripts/install.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -e
+
+echo "Determining platform..."
+platform=$(uname | tr '[:upper:]' '[:lower:]')
+echo "Finding latest release..."
+asset=$(curl --silent https://api.github.com/repos/liamg/darktile/releases/latest | jq -r ".assets[] | select(.name | contains(\"${platform}\")) | .url")
+echo "Downloading latest release for your platform..."
+curl -s -L -H "Accept: application/octet-stream" "${asset}" --output /tmp/darktile
+echo "Installing darktile..."
+chmod +x /tmp/darktile
+installdir="${HOME}/bin/"
+if [ "$EUID" -eq 0 ]; then
+  installdir="/usr/local/bin/"
+fi
+mkdir -p $installdir
+mv /tmp/darktile "${installdir}/darktile"
+which darktile &> /dev/null || (echo "Please add ${installdir} to your PATH to complete installation!" && exit 1)
+echo "Installation complete!"