add arguments to take a version

src/fb3_reader/fb3.py

@@ -1,6 +1,4 @@
 from zipfile import ZipFile
-# from bs4 import BeautifulSoup
-# from lxml import etree
 
 
 def reader(path_to_file):

src/main.py

@@ -1,4 +1,11 @@
-from fb3_reader import fb3
+from sys import argv
+from fb3_reader import fb3, __version__
 
 if __name__ == '__main__':
-    fb3.reader(input("Enter path to file: "))
+    try:
+        if argv[1] == "--version" or argv[1] == "-v":
+            print(__version__)
+        else:
+            fb3.reader(input("Enter path to file: "))
+    except IndexError:
+        fb3.reader(input("Enter path to file: "))