rstudio/rstudio — pull request #223 by kevinushey (2014-11-21 21:50:45+00:00)
Title: R completion help + signature tooltip

This PR modifies the help popup, and brings in a signature tooltip, as part of the autocompletions.

![popup](https://cloud.githubusercontent.com/assets/1976582/5150232/5b1e3966-7185-11e4-8a6e-1c76536d93e5.gif)