[reveal.js] Updated Embedded reveal.js
[config] Convert from toml to yaml.

reveal-ck's config is dirt simple. Having a "[presentation]" section was
overkill.
[gemspec, dependencies] Be More Accepting
[doc] Documentation now lives on `gh-pages`.
[config] Clean Up. Use idioms.

Rubocop inspired this change.
[image.slim] Make width and height optional
[index_html builder] Consolidate replace code
[bin/reveal-ck] Cleanup Formatting

Rubocop inspired.
[spec] Cleanup Formatting

Rubocop inspired.
[presentation] Added specs because forgot how .load works.
Prepare for v0.1.8
Merge pull request #10 from jedcn/next-release

v0.1.8