Bill dev

Changes:

• Rename Java and JSON files
  • Coord.java => ParseCoord.java
  • Dist_time.java => ParseEdge.java
  • dist_time.JSON => edge.JSON
• Added new modules
  • Coord.java (an ArrayList of JSON object storing coord's lat and long) [Not finished yet]
  • Graph.java (Adjanceny list as the data structure for implementation of the graph)
• Added a controller for data (updates JSON file for coords and edges)
  • Added a view module
    • feature: viewGraph(startIndex, endIndex), can choose to print a portion or entire graph
• Added a Mock JSON file with 20 - 30 data for testing during prototyping
  • MockCoord.JSON
  • MockEdge.JSON