Added sphinx napoleon extension

Will allow to use google style docstrings
Initial pages
Minor change
Added usage page
Usage page update
overview page update
usage page update
Documentation was not generated correctly, fixed
index page update
Removed unnecessary comments
New comments for FilesystemDetector class
Added MIT license header
Updated comments for filesystems.detector module
Updated comments for filesystems.volume module
Updated filesystems package page
Merge pull request #6 from dariusbakunas/comment-rawdisk.filesystems-code

Added docstrings for rawdisk.filesystems package and generated few sphinx pages