Added CRAN install instructions [skip ci]

Author: jonocarroll

README.Rmd

@@ -7,13 +7,14 @@ html_preview: false
 
 [![Project Status: Active - The project has reached a stable, usable state and is being actively developed.](http://www.repostatus.org/badges/latest/active.svg)](http://www.repostatus.org/#active)
 [![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/ggghost)](https://cran.r-project.org/package=ggghost)
-[![packageversion](https://img.shields.io/badge/Package%20version-0.0.0.9000-orange.svg?style=flat-square)](commits/master)
+[![packageversion](https://img.shields.io/badge/Package%20version-0.1.0-orange.svg?style=flat-square)](commits/master)
 [![Last-changedate](https://img.shields.io/badge/last%20change-`r gsub('-', '--', Sys.Date())`-yellowgreen.svg)](/commits/master)
 
 [![Linux/Mac Travis Build Status](https://img.shields.io/travis/jonocarroll/ggghost/master.svg?label=Mac%20OSX%20%26%20Linux)](https://travis-ci.org/jonocarroll/ggghost)
 [![AppVeyor Build Status](https://img.shields.io/appveyor/ci/jonocarroll/ggghost/master.svg?label=Windows)](https://ci.appveyor.com/project/jonocarroll/ggghost)
 [![codecov](https://codecov.io/gh/jonocarroll/ggghost/branch/master/graph/badge.svg)](https://codecov.io/gh/jonocarroll/ggghost)
 
+[![Downloads](http://cranlogs.r-pkg.org/badges/ggghost)](http://www.r-pkg.org/pkg/ggghost)
 [![GitHub forks](https://img.shields.io/github/forks/jonocarroll/ggghost.svg)](https://github.com/jonocarroll/ggghost/network)
 [![GitHub stars](https://img.shields.io/github/stars/jonocarroll/ggghost.svg)](https://github.com/jonocarroll/ggghost/stargazers)
 [![Twitter](https://img.shields.io/twitter/url/https/github.com/jonocarroll/ggghost.svg?style=social)](https://twitter.com/intent/tweet?text=Wow:&url=%5Bobject%20Object%5D)
@@ -46,7 +47,12 @@ Here is one option that solves that problem.
 
 ## Installation
 
-You can install `ggghost` from github with:
+You can install `ggghost` from CRAN with:
+
+```{r, eval=FALSE}
+install.packages("ggghost")
+```
+or the development version from github with:
 
 ```{r, eval=FALSE}
 # install.packages("devtools")
@@ -153,4 +159,4 @@ We now have a proper reproducible graphic.
 
 * The data _must_ be used as an argument in the `ggplot` call, not piped in to it. Pipelines such as `z %g<% tmpdata %>% ggplot()` won't work... yet.
 * Only one original data set will be stored; the one in the original `ggplot(data = x)` call. If you require supplementary data for some `geom` then you need manage storage/consistency of that.
-* For removing `labs` calls, an argument _must_ be present. It doesn't need to be the actual one (all will be removed) but it must evaluate in scope. `TRUE` will do fine.
+* For removing `labs` calls, an argument _must_ be present. It doesn't need to be the actual one (all will be removed) but it must evaluate in scope. `TRUE` will do fine.