chore(research-use-warning): Add Investigational Use Only warning

OHIFViewer/client/components/ohifViewer/ohifViewer.html

@@ -14,6 +14,9 @@
             {{/if}}
         {{/section}}
         {{#section 'headerMenu'}}
+            <span class="research-use pull-left m-r-1">
+                INVESTIGATIONAL USE ONLY
+            </span>
             <span class="header-options pull-left m-r-1">Options</span>
             <div class="menu-toggle pull-right">
                 <span class="caret-down"></span>