modify to python3 ~> initial commit
fix varsel's filename in cache

varsel files (*. varsel) had other names (hash prefix) than others (json) files, so I fix it
now hash prefix for all files that belong together is the same
Merge pull request #11 from idxxx23/python3

modify to python3 ~> initial commit
Merge pull request #12 from idxxx23/develop

Develop
Update README.md

More example-usage ....
Update setup.py

Update version after merging pull #11 and #12
Removing unused dependency
Added note about pull requests
Added a newline