install.packages("foobarbaz")

ap <- available.packages()

setRepositories()

library(devtools)
install_github("packageauthor/foobarbaz")
install_bitbucket("packageauthor/foobarbaz")
install_gitorious("packageauthor/foobarbaz")

install.packages("Rbbg", repos = "http://r.findata.org")
install.packages("lubridate", dependencies=TRUE, repos='http://cran.rstudio.com/')


source("https://bioconductor.org/biocLite.R")
biocLite("preprocessCore")

install_url("http://cran.r-project.org/src/contrib/Archive/sentiment/sentiment_0.2.tar.gz")