Ability to add custom.css per presentation

Author: jalaz

build.fsx

@@ -158,8 +158,12 @@ Target "ReleaseSlides" (fun _ ->
         CleanDir publishImagesDir
         CopyRecursive outputImagesDir publishImagesDir true |> tracefn "%A"
 
+    let cssFile = slidesDir @@ "custom.css"
+    if File.Exists cssFile then
+        CopyFile publishDir cssFile |> tracefn "%A"
+
     CopyFile publishDir (outDir @@ "index.html") |> tracefn "%A"
-        
+
     StageAll ghPagesDir
     Git.Commit.Commit ghPagesDir (sprintf "Update generated slides for %s" topic)
     Branches.push ghPagesDir

shared/template.html

@@ -18,6 +18,7 @@
     <link type="text/css" rel="stylesheet" href="../../shared/fsharp.formatting/styles/style.css" />
     <link type="text/css" rel="stylesheet" href="../../shared/fsharp.formatting/styles/deedle.css" />
     <link type="text/css" rel="stylesheet" href="../../shared/css/custom.css" />
+	<link type="text/css" rel="stylesheet" href="custom.css" />
     <script src="../../shared/fsharp.formatting/styles/tips.js" type="text/javascript"></script>
     <link rel="shortcut icon" type="image/png" href="../../shared/favicon.png">
     <!-- For syntax highlighting -->