update video links and screenshots

Gemfile.lock

@@ -128,4 +128,4 @@ DEPENDENCIES
   uglifier (~> 4.1, >= 4.1.20)
 
 BUNDLED WITH
-   1.17.2
+   2.0.1

documentation/develop/temporary-installation-in-firefox.md

@@ -57,10 +57,10 @@ The extension installs and remains installed until you remove it or restart Fire
 <!-- Video Popup Thumbnail -->
 
 {% include modules/video-popup.html
-    title="borderify WebExtension - part 1"
-    youtube_id="cer9EUKegG4"
-    image="documentation/develop/borderify-part-1.png"
-    alt="borderify part 1"
+    title="Temporarily Install Extension"
+    youtube_id="J7el77F1ckg"
+    image="documentation/develop/Temporarily-Install-Extension-EW-screenshot.png"
+    alt="temporarily install extension"
 %}
 
 <!-- END: Video Popup Thumbnail -->
@@ -91,15 +91,15 @@ This:
 <!-- Video Popup Thumbnail -->
 
 {% include modules/video-popup.html
-    title="borderify WebExtension - part 3"
-    youtube_id="NuajE60jfGY"
-    image="documentation/develop/borderify-part-3.png"
-    alt="borderify part 3"
+    title="Reload Temporary Extension"
+    youtube_id="d3hgLMVJAzY"
+    image="documentation/develop/Reload-Temp-Extension-EW-screenshot.png"
+    alt="reload temporary extension"
 %}
 
 <!-- END: Video Popup Thumbnail -->
 
-<!-- 
+<!--
 {% capture note %}
 
 Note that in Firefox 48 only, "Reload" does not update the extension's name and description that are displayed in about:debugging and about:addons. This is fixed in Firefox 49.
@@ -119,7 +119,7 @@ Note that in Firefox 48 only, "Reload" does not update the extension's name and
 
 <!-- END: Single Column Body Module -->
 
-<!-- Single Column Body Module 
+<!-- Single Column Body Module
 
 {% capture content %}