fix: set binary in .gitattributes

Fixes #176

.gitattributes

@@ -6,3 +6,16 @@
 *.bat text eol=crlf
 *.cmd text eol=crlf
 *.ps1 text eol=crlf
+*.png binary
+*.webp binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.zip binary
+*.tar binary
+*.gz binary
+*.7z binary
+*.exe binary
+*.dll binary
+*.pdf binary

README.md

@@ -216,7 +216,7 @@ For a detailed installation documentation of [pyzbar](https://github.com/Natural
 
 #### Linux (Debian, Ubuntu, …)
 
-    sudo apt-get install libzbar0
+    sudo apt-get install libgl1 libzbar0
 
 #### Linux (OpenSUSE)
 
@@ -224,8 +224,7 @@ For a detailed installation documentation of [pyzbar](https://github.com/Natural
 
 #### Linux (Fedora)
 
-    sudo dnf install mesa-libGL
-    sudo dnf install zbar
+    sudo dnf install mesa-libGL zbar
 
 #### Linux (Arch Linux)
 
@@ -733,6 +732,17 @@ Options:
 -h, --help              Show help and quit
 ```
 
+#### Additional requirements
+
+* envsubst
+* git
+* perl
+* pip
+
+##### Fedora
+
+sudo dnf install python3-pip perl envsubst
+
 ## Technical background
 
 The export QR code of "Google Authenticator" contains the URL `otpauth-migration://offline?data=…`.