0.1 todo

[orf]

So there is a fair bit to do to get to a 0.1 release. Here's a list of things I can think of:

• Look into Drawile (issue Use drawille for much improved rendering #6), seems to be a lot better than the homegrown stuff in gping at the moment.
• Clean up the code. Actually document it and make it readable, probably need to sort out the wtfworthy x/y positioning stuff (sometimes bottom left is 0,0, sometimes top left).
• Add proper command line arguments (issue Unable to set ping wait interval on OS X #25)
• Add a way to reset the graph, or make one/two huge ping spikes not make the graph scale daft (also I think the min number of graph dots is 2 for some reason)
• Support ping whatever | gping
• Possibly make the graph render on a timer rather than when receiving output from ping. Would fix the problem of not having a timeout message from some ping commands but would be more complex.

[orf]

Attempted to do item 4 in 885d786, but it seemed to stop ctrl+c working. The graph scales a bit better now if there is one or two huge ping spikes anyway.