add rrdtool & graphs support

[bonesoul]

rrdtool

• https://github.com/vdaron/robin.net
• http://www.codeproject.com/Articles/28763/C-Hooks-For-RRDtool
• http://sourceforge.net/projects/rrdsharp/
• https://sharprobin.codeplex.com/
• http://www.euphoriaaudio.com/index.php/2010/07/07/rrdtool-1-4-4-released-with-win32-and-dotnet-support/

teafiles

• https://github.com/discretelogics/TeaFiles.Net
• http://discretelogics.com/teafiles/

deedle based

• https://github.com/BlueMountainCapital/Deedle/
• http://fsharp.org/guides/data-science/index.html
• http://fsharp.github.io/FSharp.Charting/
• http://fssnip.net/kZ
• https://skillsmatter.com/skillscasts/4950-deedle-effective-data-time-series-analysis-with-tomas-petricek
• http://www.mattbutton.com/2014/06/29/creating-comparison-charts-for-stocks-with-fsharp-charting-deedle-and-yahoo-finance/
• http://dkowalski.com/blog/archive/2014/01/11/f-deedle-and-computational-investing.aspx
• http://www.slideshare.net/tomaspfb/deedle
• https://staging.nuget.org/profiles/tomasp/

misc

• http://www.extremeoptimization.com/QuickStart/CSharp/SimpleTimeSeries.aspx
• https://code.google.com/p/timeseriesdb/
• http://blog.kowalczyk.info/software/volante/database.html
• http://cronos.codeplex.com/
• http://www.zaitunsoftware.com/download-zaitun-time-series
• http://www.velocitygraph.com/
• http://nodatime.org/#info

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[bonesoul]

nice graphs here; http://cryptonotemining.org/ - we can use that too.