Update README.md (PokemonGoF#732)

Fix for error when no exceptions are listed in release_config.json (P…

…okemonGoF#567)

* Extracted map JavaScript code into map.js

* Merging fork.

* Added my name to the contributor list for adding the --distance-unit option.

* Renamed min_cp to release_under_cp and min_iv to release_under_iv in release_config.json to make purpose more clear.

* Renamed min_cp to release_under_cp and min_iv to release_under_iv in release_config.json.example to make purpose more clear.

* Added 'exceptions' to release_config and implemented the 'always_capture' rule.

* Modified release_config.json.example to show how to use exceptions to always capture the top 10 most powerful Pokemon in Pokemon Go.

* Fixed a bug where the -l argument input is ignored in favor of the cached location.

* Fixed error  when no exceptions are listed in release_config.json