'pipelineGraph' in graphPipeline() created with graph::graphNEL()
fixed broken \code{} tag in componentName() help
fixed line tabbing
fixed incoherent documentation or arguments
disabled 'external' python outputs as no code exists - will exit with error
fixed importing of 'RCurl' package to do getURL()
'pipelinePath' not declared, becomes 'pipeline'
modified license to pass R packages checks