Merge pull request #4 from mauriceling/master

1. Database creation. 2. Parameters logging. 3. Set up generational database logging. 4. Modified dose.py to use database logging (if any). 5. Completed database logging function documentation. 6. example #01 with database
Updated database_calls.py
Moved some simulation() lines into simulation_calls()
Added 'blood' status in every organism's status dictionary
Updated dose.py's database_report_world() function
Added boolean 'interpret_chromosome' key in parameters dictionary
Merge pull request #44 from clarencecastillo/master

Updated database_report_world() function in dose.py and added 'blood' key in organism's status dictionary