This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.
When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:
print("¡Todo listo para clase!")
## [1] "¡Todo listo para clase!"
You can also embed plots, for example:
## [1] 7
Note that the echo = FALSE parameter was added to the
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plot.