Add lesson on Bioconductor

[JasonJWilliamsNY]

It's important for folks to know about Bioconductor. Add a lesson where we install and use a simple library, perhaps something to help us parse VCF as in #46

[PeteHaitch]

Preface: I'm adding to this as part of Software/Data Carpentry instructor training.

Perhaps I don't quite understand the purpose of the R-genomics lesson (or whether it's still being actively developed just found 'will become available in June 2018'), but the lack of Bioconductor content also really surprised me. In my mind, and I think many other bioinformaticians, R + genomics = Bioconductor.

I love data frames, dplyr, and other content used in this lesson for general data manipulation and analysis. But not using existing the Bioconductor infrastructure (and extensive teaching materials!) seems a real shame and missed opportunity.

Finally, to mention a more speculative option, there is a dplyr-like 'grammar of genomic data manipulation' being developed that adds a tidyverse-flavour to core Bioconductor data structures (https://github.com/sa-lee/plyranges). While not ready for prime time, it may be useful in the future for learners who are familiar with R (or the at least tidyverse) but not yet with Bioconductor.