Changed Node from a struct to an enum
Refactered render_data function to hanle node enum instead of node struct
Refactored create_data_map to return a hash map of Strings
Changed Node from a struct to an enum
Refactered render_data function to hanle node enum instead of node struct
Refactored create_data_map to return a hash map of Strings
Changed Node from a struct to an enum
Refactered render_data function to hanle node enum instead of node struct
Refactored create_data_map to return a hash map of Strings
Fixed merge conflicts
Merge pull request #19 from seanchen1991/master

(refactor) refactored create_data_map to return a hash map of Strings