🎨 clean up README, create proper Makefile

Makefile

@@ -0,0 +1,4 @@
+all: install
+
+install:
+	pip install .

README.md

@@ -1,18 +1,30 @@
 # Binarization
+
 > Binarization for document images
 
 ## Introduction
-This tool performs document image binarization (i.e. transform colour/grayscale to black-and-white pixels) for OCR using multiple trained models.
+
+This tool performs document image binarization (i.e. transform colour/grayscale
+to black-and-white pixels) for OCR using multiple trained models.
 
 ## Installation
+
 Clone the repository, enter it and run  
-`./make`
+
+`pip install .`
 
 ### Models
+
 Pre-trained models can be downloaded from here:   
+
 https://qurator-data.de/sbb_binarization/
 
 ## Usage 
-`sbb_binarize -m <directory with models> -i <image file> 
--p <set to true to let the model see the image divided into patches> 
--s <directory where the results will be saved>`
+
+```sh
+sbb_binarize \
+  -m <directory with models> \
+  -i <image file> \
+  -p <set to true to let the model see the image divided into patches> \
+  -s <directory where the results will be saved>`
+```