Update csharp build (#160)

* Added csharp pages section

* Updating output directories

Author: HammadTheOne

makefile

@@ -43,11 +43,13 @@ fetch_upstream_files: clean
 	git clone --depth 1 -b built git@github.com:plotly/plotly.r-docs _posts/r/md
 	git clone --depth 1 -b built git@github.com:plotly/plotly.matlab-docs _posts/matlab/md
 	mv _posts/r/md/ggplot2 _posts/ggplot2/md
+	mv _posts/fsharp/html/csharp _posts/csharp/html
 
 clean:
 	rm -rf _posts/python/html
 	rm -rf _posts/julia/html
 	rm -rf _posts/fsharp/html
+	rm -rf _posts/csharp/html
 	rm -rf _posts/r/md
 	rm -rf _posts/ggplot2/md
 	rm -rf _posts/matlab/md