multiple files works but does not work for hash-type yaml files
Hash-type yaml files can have multiple files loaded for a single model

- Yaml file of array type and of hash type cannot both be loaded for a single model (ActiveHash::FileTypeMismatchError is raised)
- fix typo in provences.yml
- remove duplicate constant removal in active yaml spec
Add to readme
Remove bad comment
ActiveJSON is a simple ActiveFile subclass
Active JSON works for multiple files

- include tests for hash-style json files as well
- ActiveFile::HashAndArrayFiles module for shared behavior
Update read me to include documentation for ActiveJSON
Merge pull request #83 from rheaton/feature/active-json-multiple-files

ActiveJSON with multiple files support
Temporarily disable jruby and rbx on travis until I can work out the spec bugs
update readme to stop referencing appraisal
fix spec failures in all MRI versions
improve error message for duplicate ids
attempt to get travis working again

- dropped travis support for rbx
- simplified gemspec
- moved ruby version to spec/support so it's not required at runtime
- updated to ruby-2.1.0
Merge branch 'master' of https://github.com/zilkey/active_hash
Add type option to typecast value pass for field method.