Fix README.md anchors

[ci skip]
Entity defines #id accessor by default
Merge pull request #22 from zizkovrb/fix-readme-anchors

Fix README.md anchors
Introduced Lotus::Model::Mapping::Coercions in order to decouple from Lotus::Utils::Kernel
Let the final gem to include only essential files
CHANGELOG
Update doc coverage badge in README
Bump version to v0.1.1
Fixed gemspec
enable rubinius testing
reqire fix
Merge pull request #27 from spiridonov/require-coercions-fix

missed require of coercions module
Merge pull request #23 from zlw/entity_id

Entity defines #id accessor by default
Merge pull request #26 from Benny1992/master

Enable Rubinius testing
Don't require coercions module in testing, this prevents a regression fixed with #27
Bump version to 0.1.2
[ci skip] CHANGELOG
Set required ruby version
Made the usage of repositories more clear.

In order to prevent a wrong setup of the repositories a small code
example was added to the README.md.
Added proper includes to the README.md.