added csl parameter

documentation/README.md

@@ -3,7 +3,7 @@
 Uses [pandoc](https://pandoc.org/MANUAL.html#pandocs-markdown) flavoured markdown.
 
 ``` sh
-pandoc --filter pandoc-citeproc --bibliography=paper.bib --variable papersize=a4paper -s *.md -o paper.pdf
+pandoc --filter pandoc-citeproc --bibliography=paper.bib --csl=acm-sig-proceedoings.csl --variable papersize=a4paper -s *.md -o paper.pdf
 ```
 
 ## Resources
@@ -12,4 +12,4 @@ pandoc --filter pandoc-citeproc --bibliography=paper.bib --variable papersize=a4
 
 [How to 2](https://v4.chriskrycho.com/2015/academic-markdown-and-citations.html)
 
-[How to 3](https://medium.com/@krzysztofczarnecki/i-wrote-my-thesis-in-markdown-heres-how-it-went-3f60140dfe65)
\ No newline at end of file
+[How to 3](https://medium.com/@krzysztofczarnecki/i-wrote-my-thesis-in-markdown-heres-how-it-went-3f60140dfe65)