Merge pull request #140 from sensu/asset_name_field

Change asset name copy

app/views/extensions/new.html.erb

@@ -30,7 +30,7 @@
         <div class="description-field">
           <%= f.text_field :name, placeholder: "Name", title: "Name", required: true, id: "extension-name-field" %>
           <small class="error">Name is required.</small>
-          <p class="hint-block">Please use title case for the name, e.g. My Gift to the Community.</p>
+          <p class="hint-block"><%= t('nouns.extension').titleize %> names can contain lowercase letters, numbers, underscores, and dashes (for example: sensu-email-handler).</p>
         </div>
         <div class="description-field">
           <%= f.text_field :description, placeholder: "Description", title: "Description", required: true, id: "extension-desc-field" %>