Merge pull request #932 from ringmaster217/issue-931

issue 931 fix

Author: fehguy

lib/client.js

@@ -346,6 +346,9 @@ SwaggerClient.prototype.buildFromSpec = function (response) {
   if (typeof this.url === 'string') {
     location = this.parseUri(this.url);
     if (typeof this.scheme === 'undefined' && typeof this.schemes === 'undefined' || this.schemes.length === 0) {
+      if (typeof location !== 'undefined' && typeof(location.scheme) !== 'undefined') {
+        this.scheme = location.scheme;
+      }
       if(typeof window !== 'undefined' && typeof(window.location) !== 'undefined') {
         // use the window scheme
         this.scheme = window.location.protocol.replace(':','');