Merge pull request #2 from ClaudiuC/custom_conf

Allow custom config.hdf file
don't want extra code
document custom config
Merge pull request #3 from ClaudiuC/cleanup_unused_code

Delete dead code
Merge pull request #4 from ClaudiuC/update_readme

Document custom config in README
space around =

A little easier to read
Added linter and test file
rebase