Implement log search to find transactions.

Signed-off-by: Nicolás Ortega Froysa <nicolas@ortegas.org>

README.md

@@ -5,6 +5,13 @@ system, and now you have to go in and downgrade those packages? It's a pain
 ain't it? Well, this should make it slightly less of a pain (you may still have
 to boot from a USB depending on just how broken it is).
 
+## Installation
+
+Dependencies:
+
+- Perl 5
+- `File::ReadBackwards` module
+
 ## License
 
 This project is licensed under the terms & conditions of the Zlib license.