Added threshold functionality.  This is functional but needs the logic so that thresholds can be changed on the fly.  Currently the page needs to be saved and reloaded in order for it to take effect.
Added threshold set button.  This does not save the model but remakes the graph with plot bands from the provided thresholds.
Cleaned up threshold bar.
UI changes
Updated sample config to point to tsdb defaults.
Changed to use vi instead of vim.
Added images to readme
Added images to readme
UI changes to threshold bar.
Updated default tsdb port to 4242
Updated image url.
Updated image url
Updated image url
Updated image urls
updated readme
updated readme
updated readme