add oneline at the top of all files in the folder, including subfolders using shell scripting
###Params:
- $1 the encoding line
- $2 the path to folder
- $3 the file extension
#####example:
bash unicode-all.sh encoding_line path_to_folder file_extension
###How to use:
bash unicode-all.sh "# -*- coding: utf-81 -*-" test .py
#####Usual enconding lines:
# -*- coding: utf-8 -*-
# coding: UTF-8
# encoding: UTF-8
# zencoding: UTF-8
# vocoding: UTF-8
# fun coding: UTF-8
# decoding: UTF-8
# 863280148705622662 coding: UTF-8 0072364213
# It was the night before Christmas and all through the house, not a creature was coding: UTF-8, not even with a mouse.