Validating form fields on the client

Change-Id: I33a0c2417d73d7974e4dc0c2f9f77f3984508606
diff --git a/src/app/core/header/header.html b/src/app/core/header/header.html
index 3a277e0..5025258 100644
--- a/src/app/core/header/header.html
+++ b/src/app/core/header/header.html
@@ -37,7 +37,7 @@
         <input
           type="text"
           class="form-control"
-          placeholder="Search core models"
+          placeholder="Navigate routes (press 'f' to select)"
           style="width: 275px"
           ng-model="vm.query"
           uib-typeahead="state.label for state in vm.states | filter:$viewValue | limitTo:8"