[BioC] GSEA and Broad gene sets

[Brian_Hare at vrtx.com]

 Are there any detailed instructions available (e.g. vignettes) for how to 
do GSEA on 
 the Broad collection of pathways in Bioconductor?  I see bits and peices 
- e.g. GSEAbase, 
 geneSetTest(limma) - but haven't seen it all put together - thanks