Adding US Presidents retrieved from govtrack.us
Adding Canada provinces and territories
updated spelling
Merge pull request #43 from rossbarclay/master

Adding Canada provinces and territories
Update computer_sciences.json

Adding additional programming languages
Update computer_sciences.json

Fixed missing comma
Merge pull request #44 from alforj/master

Update computer_sciences.json
Merge pull request #42 from amarriner/us_presidents

Adding US Presidents retrieved from govtrack.us