added pdf print options

slides/styles/htmlbook.css

@@ -372,3 +372,20 @@ div.blue {
   border-radius: 5px; 
   padding: 20px;
 }
+
+/**********
+
+Setup for PDF printing
+
+**********/
+@page { margin: 0; }
+
+@media print {
+  .remark-slide-scaler {
+    width: 100% !important;
+    height: 100% !important;
+    transform: scale(1) !important;
+    top: 0 !important;
+    left: 0 !important;
+  }
+}
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slides/styles/slides.css

@@ -483,4 +483,21 @@ other formats
   margin-left: 0em;
   margin-top: 1.5em;
   text-align: left;
+}
+
+/**********
+
+Setup for PDF printing
+
+**********/
+@page { margin: 0; }
+
+@media print {
+  .remark-slide-scaler {
+    width: 100% !important;
+    height: 100% !important;
+    transform: scale(1) !important;
+    top: 0 !important;
+    left: 0 !important;
+  }
 }
\ No newline at end of file