Fix git remote parsing, allow for non git directories, updated linting, readme and hidden file_name

[tofran]

1. Closes GIT_REPOSITORY_REGEX should accept more repo url's  #16 - allow for more generic git url parsing.
2. Allow using 1password-secrets outside git repos or git repos without a remote named "origin" - or even if git is not installed.
3. Had to update the dev deps as I faced an odd bug in pycodestyle:

   pycodestyle .
   ./onepassword_secrets.py:412:51: E231 missing whitespace after ':'
   ./onepassword_secrets.py:429:51: E231 missing whitespace after ':'
   ./onepassword_secrets.py:456:52: E231 missing whitespace after ':'
   ./onepassword_secrets.py:478:52: E231 missing whitespace after ':'
   ./onepassword_secrets.py:494:57: E231 missing whitespace after ':'
   

4. Updated readme
5. Fixed note creation that would set file_name as a password and not as a text field (only has UI implications).