Merge pull request #8 from suranyami/master

Updated to version 0.15.1 syntax of Elixir.
Update version and elixir reps
Merge pull request #9 from suranyami/master

Can now pad a hex encode to a set number of digits
Merge pull request #10 from suranyami/master

Added an example of encoding with padding in the README.md
Merge pull request #11 from suranyami/master

Adds floats to be converted and default padding digits
Merge pull request #12 from suranyami/master

Fixed mistakes in the README examples for encode_to_list, decode_to_list
Merge pull request #13 from suranyami/master

Bumped version to 0.4.1, added Changelog
Merge pull request #15 from suranyami/master

Renamed library to 'hexate' to avoid name clash with Hex.pm
Added notes about name change, updating deps.

Also some basic info about contributing, authors.