Developments since BioC 3.5 Release

[nhejazi]

• adds new ID option to biomarkertmle to appropriately deal with dependent data
• adds badge for JOSS review of software (advertisement) paper
• adds badge for length of time package has been in Bioconductor
• removes the modTestOut argument/output in several core functions
• adds options for next-generation sequencing (RNA-seq) data based on limma::voom
• adds appropriate internal classes and options to deal with output of limma::voom
• adds first set/suite of unit tests, based on Hadley's testthat package
• most recent build completes on Travis-CI
• most recent build fails on Appveyor due to problem installing karthik/wesanderson