install.packages('quanteda', repos='http://cran.us.r-project.org')
install.packages('quanteda.textstats', repos='http://cran.us.r-project.org')
install.packages('quanteda.textplots', repos='http://cran.us.r-project.org')
install.packages('readtext', repos='http://cran.us.r-project.org')
install.packages('devtools', repos='http://cran.us.r-project.org')
devtools::install_github("quanteda/quanteda.corpora")
devtools::install_github("quanteda/quanteda.textmodels") 
install.packages('ggplot2', repos='http://cran.us.r-project.org')
install.packages('SnowballC', repos='http://cran.us.r-project.org')
install.packages('corrplot', repos='http://cran.us.r-project.org')