Created file charlie.rb

* Added initial data structure, arrays for each line
* Added array of all lines
Simple Distance Calculation

* Added initial structure for taking eventual user input for trip end points w/lines
* Gave conversion to stop input to point to keys in mta hash
* Changed line arrays to traditional array syntax (and removed cruft commas) for multi-word stop processing
* Created variables for stop/line matrices
* Created conditional that runs trip distance calculation if stops are on the same line
* Puts statements of variables for testing
Different Line Calculation

* Added intersect variables to represent the index of the stop "Park"
on both the o_line and the d_line
    *** Side note: Added comment here for potential later structure to avoid hard-coding "Park" and allow for resetting of a variable center_stop ***
* Add else to conditional statement
  * Else runs when lines are not the same
  * Trip distance is the sum of:
    * Distance from origin stop to intersection on o_line
    * Distance between intersection on d_line and destination stop.
* Reordered puts for easier testing
Added Changeable intersection stop, testing

* Reordered code for logical readability (and convenience)
* Changed intersection variables to show the position of ANY center stop instead of explicitly "Park"
* Center_stop variable defined with conditionals, to set as only intersection point and to ask user to pick only intersection point if multiple stops are in all lists
  * See comments in this block for known errors and desired future additions to functionality
* Successful tests for accurate distnance for same start and end
Updated variables, distance message

* Updated center stop variable for functionality
* Tested center stop section, dealt with issues of conversion from array to string
  * There is still a better answer, but found route that runs
* Added final puts method to remind the user what they input, and tell them the distance of their trip in number of stops