Update README.md

Author: TheStalkerDen

README.md

@@ -1,2 +1,24 @@
-# lisp-diff
-Diplom Project
+# Lisp semantic diff
+It is a project of lisp semantic diff. It was started as the main part of my bachelor's diploma project.
+# Features
+- supports semantic diff of a small subset of Common Lisp by analyzing ***s-exprs***
+- compares 2 lisp files and detects added, deleted, and modified def-s-exprs (like `defun`, `defvar` etc) 
+- can highlight added, deleted, and moved s-exprs inside particular modified def-s-expr.
+- also detects and highlights lexical, syntactic, and some semantic erros
+
+# Dependencies
+- QT5 libs and qmake
+- sbcl and asdf
+
+# Screenshots
+## Start window
+![Start window](/screenshots/first-window.png?raw=true)
+## Standard diff results
+![Standard diff results](/screenshots/normal-result-window.png?raw=true)
+## Errors detecting
+![Errors detecting](/screenshots/errors-highlighting.png?raw=true)
+## Moved s-expr selecting
+![Moved s-expr selecting](/screenshots/moved-s-expr-selection.png?raw=true)
+## Def to def diff
+![Def to def diff](/screenshots/def-to-def-result.png?raw=true)
+