Star chart 1.0

[mofhu]

I propose Star chart 1.0, in which we implement the plotter of graph.

• [x] input: python star_chart.py topo.csv demand.csv
• [x] output: a figure showing graph
  • [x] nodes and weights noted in the figure
  • [x] source and sink noted in the figure
  • [x] nodes in V' noted in the figure

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to be more complicated (implement later in 1.1 as minor priority):

• [x] optional argument for drawing path (add input as output.csv) in the figure
  • run by python star_chart.py topo.csv demand.csv [output.csv]

[mofhu]

logic almost finished in 1b94681

[mofhu]

star chart 1.0 finished in d6fbd11

to do in version 1.1:

• [x] clear temp file (line 67)
• [x] finer edge when plotting big graph
• [x] pyflake8

[mofhu]

resolved in 15919db