Finally fix all readme image issues

README.md

 
 Give your [xaringan](https://github.com/yihui/xaringan) slides some
 style with **xaringanthemer** within your `slides.Rmd` file without
-(much)
-CSS.
+(much) CSS.
 
-<img src="/Users/garrickaden-buie/Dropbox/R/xaringanthemer/vignettes/images/examples.gif" width="100%" />
+<img src="vignettes/images/examples.gif" width="100%" />
 
   - [Installation](#installation)
   - [Quick Intro](#quick-intro)
 
 <center>
 
-<img src="/Users/garrickaden-buie/Dropbox/R/xaringanthemer/vignettes/images/rmarkdown-template-screenshot.png" width="350px" />
+<img src="vignettes/images/rmarkdown-template-screenshot.png" width="350px" />
 
 </center>
 

vignettes/rmdchunks/_quick-intro.Rmd

 
 <center>
 ```{r out.width="350px"}
-knitr::include_graphics(here::here("vignettes/images/rmarkdown-template-screenshot.png"))
+if (exists('IS_README') && IS_README) {
+  knitr::include_graphics("vignettes/images/rmarkdown-template-screenshot.png") 
+} else {
+  knitr::include_graphics(here::here("vignettes/images/rmarkdown-template-screenshot.png"))
+}
 ```
 </center>
 

vignettes/rmdchunks/_tagline-gif.Rmd

 
 Give your [xaringan] slides some style with **xaringanthemer** within your `slides.Rmd` file without (much) CSS.
 
-```{r} 
-knitr::include_graphics(here::here("vignettes/images/examples.gif"))
+```{r echo=FALSE}
+if (exists('IS_README') && IS_README) {
+  knitr::include_graphics("vignettes/images/examples.gif") 
+} else {
+  knitr::include_graphics(here::here("vignettes/images/examples.gif"))
+}
 ```