Added CRAN install instructions [skip ci]

README.md

@@ -1,7 +1,8 @@
-[![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) [![Last-changedate](https://img.shields.io/badge/last%20change-2016--08--07-yellowgreen.svg)](/commits/master)
+[![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-0.1.0-orange.svg?style=flat-square)](commits/master) [![Last-changedate](https://img.shields.io/badge/last%20change-2016--08--07-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)
 
 <!-- README.md is generated from README.Rmd. Please edit that file -->
@@ -24,7 +25,13 @@ Here is one option that solves that problem.
 Installation
 ------------
 
-You can install `ggghost` from github with:
+You can install `ggghost` from CRAN with:
+
+``` r
+install.packages("ggghost")
+```
+
+or the development version from github with:
 
 ``` r
 # install.packages("devtools")