add signal handler

main.py

@@ -1,8 +1,21 @@
+import signal
+import shutil
 from pathlib import Path
 from PyTeX.build.build import PyTeXBuilder
 from PyTeX.build.build.pytex_config import PyTeXConfig
 from PyTeX.format.formatting_config import FormattingConfig
 
+
+def interrupt_handler(signum, frame):
+    if Path('.pytex').exists():
+        shutil.rmtree('.pytex')
+    print('Interrupted execution')
+    quit(1)
+
+
+signal.signal(signal.SIGINT, interrupt_handler)
+
+
 conf_path = Path('.pytexrc')
 
 builder = PyTeXBuilder(conf_path)
@@ -10,5 +23,4 @@ builder = PyTeXBuilder(conf_path)
 builder.build_tex_sources()
 
 
-
 pass