Update _output.yml

_output.yml

@@ -2,6 +2,7 @@ bookdown::gitbook:
   # When using multiple css files, the default file path will be the first one #
   css: [assets/style.css, assets/GDSCN_style/gdscn.css]
   includes:
+    in_header: GA_Script.html
     before_body: assets/GDSCN_style/big-image_gdscn.html
     after_body: assets/GDSCN_style/footer.html
   highlight: tango
@@ -16,4 +17,4 @@ bookdown::gitbook:
        <a href="http://jhudatascience.org/"><img src="https://jhudatascience.org/images/dasl.png" style=" width: 80%; padding-left: 40px; padding-top: 8px; vertical-align: top "</a>
        <p style="text-align:center; font-size: 12px;"> <a href="https://github.com/rstudio4edu/rstudio4edu-book/"> Style adapted from: rstudio4edu-book </a> <a href ="https://creativecommons.org/licenses/by/2.0/"> (CC-BY 2.0) </a></p>
        <p style="padding-left: 40px;"><div class="trapezoid" style = "padding-left: 40px;"><span>  <a href="https://forms.gle/AK12iVXTjsB7yCUUA"> Click here to provide feedback</a> <img src="assets/itcr_arrow.png" style=" width: 10%" ></span></div></p>
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