Updated the symbolize.gemspec to satisfy the requirements because they were wrong;
Removed the Gemfile.lock because a gem shouldn't have it in the repository.
Info: http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/.
Hint: the gemspec file take care about the requirements;
Removed the User class declaration because it was conflicting with active_record_spec definition.
It was impossible to run all spec's at once;
Fixed a typo in the mongoid;
Modified the read_i18n_attribute method in active_record to take care about returning Hashes from i18n (to satisfy the tests);
Added more definitions to pt.yml to satisfy tests;
Added tests and modifications from @rewritten's pull request https://github.com/nofxx/symbolize/pull/33.
I had to modify it to fit the changes into the current state of the source code;
Merge pull request #40 from SeriousM/master

Enum support for RailsAdmin, Tests are running now, corrected Dependencies