Use the Zotero-csl directly from the ICLC-10 GitHub page

Change-Id: I0d356a1b09f89759a493fbdeb48377fe41d7e43c
diff --git a/R/poster.Rmd b/R/poster.Rmd
index c6bb39d..cb8d15d 100644
--- a/R/poster.Rmd
+++ b/R/poster.Rmd
@@ -76,7 +76,7 @@
         keep_md: true
 
 bibliography: ../tex/references.bib
-csl: ids.csl
+csl: "https://raw.githubusercontent.com/ICLC-10/Zotero/master/styles/ICLC-10.csl"
 ---
 
 ```{r setup, include=FALSE, echo=FALSE, warning=FALSE}