Add a bla about requirements

README.md

@@ -10,6 +10,14 @@
 [![coverage report](https://0xacab.org/jvoisin/mat2/badges/master/coverage.svg)](https://0xacab.org/jvoisin/mat2/commits/master)
 
 
+# Requirements
+
+- `python3-mutagen` for audio support
+- `python3-gi-cairo` and `gir1.2-poppler-0.18` for PDF support
+- `gir1.2-gdkpixbuf-2.0` for images support
+- `libimage-exiftool-perl` for everything else
+
+Please note that MAT2 runs on Python3.
 
 # Run the testsuite