Remove schema for echo loader and twitter widget scripts
diff --git a/demo-dev.html b/demo-dev.html
index c3560bd..38d4607 100644
--- a/demo-dev.html
+++ b/demo-dev.html
@@ -6,7 +6,7 @@
 
 <body>
 
-	<script type="text/javascript" src="http://cdn.echoenabled.com/sdk/v3/loader.js"></script>
+	<script type="text/javascript" src="//cdn.echoenabled.com/sdk/v3/loader.js"></script>
 
 	<div id="container" style="margin: 0px auto; width: 50%; max-width: 440px;"></div>
 
diff --git a/demo.html b/demo.html
index 2786c01..8d723b4 100644
--- a/demo.html
+++ b/demo.html
@@ -6,7 +6,7 @@
 
 <body>
 
-	<script type="text/javascript" src="http://cdn.echoenabled.com/sdk/v3/loader.js"></script>
+	<script type="text/javascript" src="//cdn.echoenabled.com/sdk/v3/loader.js"></script>
 
 	<div class="echo-canvas" data-canvas-id="echo/c996p4ynqs" data-canvas-mode="dev" style="margin: 0px auto; width: 50%; max-width: 440px;"></div>
 
diff --git a/plugins/tweet-display.js b/plugins/tweet-display.js
index 6d2e143..25e48bf 100644
--- a/plugins/tweet-display.js
+++ b/plugins/tweet-display.js
@@ -164,7 +164,7 @@
 
 plugin.dependencies = [{
 	"loaded": function() { return !!window.twttr; },
-	"url": "http://platform.twitter.com/widgets.js"
+	"url": "//platform.twitter.com/widgets.js"
 }];
 
 plugin.enabled = function() {