refactor(e): improve codie security
refactor(e): improve codie security

* Use -w flag to test writability
* Use 'sudo -e --' to:
    * -e: protect against security issues ;
    * --: filename starting with '-'.

See blog for explanations: http://blog.edouard-lopez.com/reduce-frictions-and-cognitive-load-when-editing-files/

edouard-lopez/dotfiles,edouard-lopez/dotfiles