Issue #40 : Changes call .Plot on main.go to .PlotMany

[KarlHeitmann]

This solves Issue #40 , cmd/asciigraph/main.go was modified to call always PlotMany.

The previous behavior is preserved. In order to add more plots to the graph, separate the values using comma: ,

I tested this with two files:

# data
1
2
3
4
5

# data_2
1,3
2,3
3,2
4,2
5,2

If a string don't contain a comma, and the strings.Split function is applied to it, you will have an array with one element. This edge case input is a valid argument to .PlotMany, so it will draw a single plot on the graph.

A follow up PR to this one could be modify the -sc flag so you can put a comma separated list of values (eg: -sc yellow,red), and the program the appropriate color for each plot (eg: yellow for the first plot, and red for the second plot)

[coveralls]

Pull Request Test Coverage Report for Build 8488831541

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.89%

---

Totals
Change from base Build 8471941070:	0.0%
Covered Lines:	350
Relevant Lines:	365

---

💛 - Coveralls

[guptarohit]

Hey @KarlHeitmann, Thank you for creating the PR 😃 💚

Coincidentally, I was also working (mastodon post) on the same feat. 😄
feat branch: https://github.com/guptarohit/asciigraph/tree/multiple-data-stream-stdin-cli

I was thinking to update README and then open PR, Great that you opened it!

Going forward, I think we can merge our changes, (cherry-pick maybe 🤔)