Correct os-refresh-config README.md typo and format

Replace `run-parts' with `dib-run-parts' since os-refresh-config is
using it. Correct markdown code block format.

Change-Id: If0184b80d0f35bc30f9799135bd4f659889bcbbd
Updates .gitignore

To ignore swap files from getting into repository
currently the implemented ignore is *.swp
however vim adds more swap files if these files exists,
so improving this with *.sw?

Change-Id: I03cae7b9b0c2a8bef30e5f4b39c0d75e752d7f6b
Closes-Bug: #1255884
Correct tox -e pep8 failed items

Add Apache 2.0 license header, remove unused import, remove blank
before `:'.

Change-Id: I1923a403969481566e4c9be67737e4488b763046
Merge "Correct tox -e pep8 failed items"
Merge "Correct os-refresh-config README.md typo and format"