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#Title: MBTA Homework

Fork, clone, branch (practice) and npm install

• Practice with functions, arrays, and properties of an object literal.
• You may submit a pull request for this practive, but it is not required.

• Create a function in lib/mbta.js to calculate the number of stops between stations on the "MBTA". Write additional functions used by this function as needed.
• The function takes the line and stop that a rider is getting on at and the line and stop that user is getting off at and returns the total number of stops for the trip.

There are 3 subway lines:

• The Red line has the following stops: South Station, Park Street, Kendall, Central, Harvard, Porter, Davis, Alewife
• The Green line has the following stops: Government Center, Park Street, Bolyston, Arlington, Copley, Hynes, Kenmore
• The Orange line has the following stops: North Station, Haymarket, Park Street, State, Downtown Crossing, Chinatown, Back Bay, Forest Hills
• All 3 subway lines intersect at Park Street, but there are no other intersection points. Some of this MBTA is fictionalized.

Run grunt test.

• Assume good input. Your function need not check the validity of the line or stop.
• Consider diagramming the lines by sketching out the subway lines and their stops and intersection.
• Subway lines are properties in an object literal (hashmap), while the values are an array of all the stops on each line.
• The key to the lab is to find the intersection of the lines at Park Street.
• Solve an easier problem first.

Think about adding Haymarket to the Green line. Try to find a solution for multiple intersections. Is there a way to decide is an answer is "correct"?

This bonus is completely optional and does not have tests, yet.