Make PEP 8 Changes and fix vault.py

[hernandeznahuel]

Changes this pull request makes :

Make PEP 8 changes in the project. Remove an unused line of the parser on vault.py

Checklist :

• [x] I have added the relevant documentation.
• [x] My branch is up-to-date with the upstream master branch.
• [x] I have fully tested the changes locally.

Development environment

OS: Linux
Python Version: 3.4.6