add many calls to action

index.html

@@ -89,7 +89,10 @@
           <img src="img/logo/tree-s.png" style="width:45%;height:45%;">
           <br><br>
           <div class="intro-lead-in">From Data to Viz leads you to the most appropriate graph for your data. It links to the code to build it and lists common caveats you should avoid.</div>
-          <a class="btn btn-primary btn-xl text-uppercase js-scroll-trigger" href="#explore">Explore</a>
+          <div style="text-align:center">
+            <a class="btn btn-primary btn-xl text-uppercase js-scroll-trigger" href="#explore">Explore</a>
+            <a class="btn btn-primary btn-xl text-uppercase" data-toggle="modal" href="#poster_full">See poster</a>
+          </div>
         </div>
       </div>
       <!-- Add iib image -->
@@ -115,12 +118,12 @@
 
 <!-- =======================  TREE SELECTION SECTION ======================= -->
 
-    <section id="explore" style="padding: 0px 0; padding-top: 100px">
+    <section id="explore" style="padding: 0px 0; padding-top: 100px;">
       <div class="container">
         <div class="row">
           <div class="col-lg-2 text-center"></div>
           <div class="col-lg-8 text-center">
-            <p>What kind of data do you have? Pick the main type using the buttons below. Then let the decision tree guide you toward your graphic possibilities.</p>
+            <p>What kind of data do you have? Pick the main type using the buttons below. Then let the decision tree guide you toward your graphic possibilities. Alternatively, check the <a data-toggle="modal" href="#poster_full">complete decision tree</a>.</p>
           </div>
         </div>
         <div class="row">
@@ -138,13 +141,6 @@
        </div>
       <br>
 
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 <!-- ======================================================================= -->