In file AppBrowser.java: New code within shouldOverrideUrlLoading() to

check for whitelisting custom schemes via a new "AllowedSchemes"
preference configuration item.  Allows custom schemes like
"mycoolapp://" or "wevotetwitterscheme://"

In file inappbrowser.js: Added new "customscheme" channel.

Author: SailingSteve

src/android/InAppBrowser.java

@@ -1112,7 +1112,7 @@ else if (url.startsWith("sms:")) {
                 }
             }
             // Test for whitelisted custom scheme names like mycoolapp:// or twitteroauthresponse:// (Twitter Oauth Response)
-            else if (!url.startsWith("http:") && !url.startsWith("https:") && url.matches("^[a-z]://.*?$")) {
+            else if (!url.startsWith("http:") && !url.startsWith("https:") && url.matches("^[a-z]*://.*?$")) {
                 if (allowedSchemes == null) {
                     String allowed = preferences.getString("AllowedSchemes", "");
                     allowedSchemes = allowed.split(",");