Firehose analyses

[lwaldron]

@LiNk-NY @schifferl - Firehose accesses all sorts of useful analyses that can be added to the MultiAssayExperiments, as pData, additional ExperimentList elements, or annotations to existing ExperimentList elements. See http://firebrowse.org/?cohort=ACC# - this also helps organizing the analyses by assay.

I've put all Firehose analyses on iRods in TCGA/Firehose_analyses, although it is just as easy to download them with the firehose_get command-line tool with the following command:

firehose_get analyses latest

We'll have to review these to see what would be practical to add, and how, but these seem like low-hanging fruit for high-value MultiAssayExperiment additions (including clustering for several assays across all cancer types...)