more polish

.gitignore

@@ -5,3 +5,4 @@
 Getting-Started-in-R_files
 Getting-Started-in-R_cache
 Getting-Started-in-R.zip
+local

Contributors.md

@@ -3,6 +3,7 @@ Contributors
 
 ## Authors
 - [Saghir Bashir](https://github.com/saghirb)
+- [Dirk Eddelbuettel](http://dirk.eddelbuettel.com)
 
 ## Reviewers
 - Cecile Dubois
@@ -11,6 +12,8 @@ Contributors
 - Inês Leitão 
 - [Isabel Lafaia](https://github.com/IsabelLafaia)
 - [Hugo Ferreira](https://twitter.com/hu_daa)
+- Jordi Tarrés-Call
+- [Brodie Gaslam](https://github.com/brodieG)
 
 ## List of Contributors
 - ...

Getting-Started-in-R.Rmd

@@ -130,7 +130,7 @@ starts with information about the version number, license and contributors.
 The last line is a standard prompt "`>`" that indicates R is ready and expecting
 instructions to do something.
 ```{r RStudioScreenshot, out.width="3.4in", fig.show='hold', fig.cap="\\label{fig:rstudio}RStudio Screenshot with Console on the left and  Help tab in the bottom right", echo=FALSE}
-include_graphics("RStudio-Screenshot.png")
+include_graphics("figures/RStudio-Screenshot.png")
 ```
 
 ## Quitting R & RStudio
@@ -473,12 +473,12 @@ Investigate the *effect of diet on the weight over time*.
 
 # Importing The Data
 
-```{r writeCW, echo=FALSE, message=FALSE, warning=FALSE, eval=FALSE}
-ChickWeight %>%
-  select(Chick, Diet, Time, weight) %>% 
-  arrange(Chick, Diet, Time) %>% 
-  write_csv("ChickWeight.csv")
-#CW <- read_csv("ChickWeight.csv")
+```{r writeCW, echo=FALSE, message=FALSE, warning=FALSE, eval=TRUE}
+## data.table already loaded above
+CW <- data.table(ChickWeight)
+if (!file.exists("ChickWeight.csv"))
+    fwrite(CW[, .(Chick, Diet, Time, weight)],
+           file="ChickWeight.csv")
 ```
 
 First we will import the data from a file called `ChickWeight.csv` using the `fread()`

README.md

@@ -1,38 +1,52 @@
-# Getting Started in R
+## Getting Started in R
 
-**An 8 page PDF "Getting Started in R" Guide.**
+An eight-page pdf guide for "Getting Started in R".
 
-**Objective** 
+### Objective
 
-To create a short guide that gives a quick overview and introduction to R and 
-the `tidyverse` package.
+To create a short guide that gives a quick overview and introduction to R. 
 
-**How?**
+### How?
 
 * Using a practical approach of showing how to do things immediately using realistic 
 examples and a real life dataset. 
 * Avoiding technical details where possible.
 * Making it fun and interesting.
 
-**For whom?**
+### For whom?
 
 * Beginners.
 * Data scientists, statisticians, programmers, ... who want to get a flavour of R.
 * Those who want a quick refresher guide to R.
 * The curious.
 
-**Outcome**
+### Outcome
 
 * After reading the guide, following the examples and doing exercises you will 
 learn how to manipulate, visualise and summarise data.
 * Hopefully you will have the curiousity to learn more :)
 
-**Try it now!**
+### Try it now!
 
-1. Downloaded (http://ilustat.com/shared/Getting-Started-in-R.zip).
-2. Unzip this file.
-3. Open the "Getting-Started-in-R.pdf" to get started.
-4. Enjoy :)
+1. [Clone](https://help.github.com/articles/cloning-a-repository/) this repo, or [download the pdf](Getting-Started-in-R.pdf) !
+2. Open [Getting-Started-in-R.pdf](Getting-Started-in-R.pdf) to get started.
+3. Enjoy :)
 
+### Origin
 
-**A big thank you to the [reviewers and contributors](https://github.com/saghirb/Getting-Started-in-R/blob/master/Contributors.md)**.
+This is modified version of
+[Getting-Started-in-R](https://github.com/saghirb/Getting-Started-in-R) by 
+[Saghir Bashir](https://github.com/saghirb), with a careful focus on
+dependency use which we refer to as [_The Tinyverse_](http://www.tinyverse.org/).
+
+### Thanks
+
+A big thank you to the [reviewers and contributors](Contributors.md).
+
+### License
+
+GPL-3
+
+### Authors
+
+Saghir Bashir and Dirk Eddelbuettel