Removed duplicate sort_buffer_size and made innodb log file size work.
Initial rspec for tuning attributes.
Create fake cookbook to test the cookbook

* Add recipe to download a database dump and import it to mysql
Add integration test to run queries on mysql server
More updates

- Renamed 'calculate_mysql_tuning_attributes' to 'tune_attributes'.
- Renamed 'calculate_system_memory' to 'memory_in_megabytes'.
- Enhanced memory_in_megabytes to work with Integers.