Fix last lines

Author: m-rossi

README.md

@@ -1 +1,2 @@
-Collection of scripts for [Pythonista](http://omz-software.com/pythonista/) for iOS.
+Collection of scripts for [Pythonista](http://omz-software.com/pythonista/) for iOS.
+

append_excel.py

@@ -81,4 +81,3 @@ def main():
 
 if __name__ == '__main__':
  main()
-

markdown_preview.py

@@ -34,4 +34,3 @@ def main():
 
 if __name__ == '__main__':
  main()
-

trim_trailing_whitespace.py

@@ -19,4 +19,3 @@ def main():
 
 if __name__ == '__main__':
  main()
-