[other] show how to use staging

Author: bredmond5

.gitignore

@@ -35,3 +35,4 @@ dist
 dev
 .nyc_output
 test-results.json
+.idea/

example.html

@@ -83,6 +83,7 @@ <h4>QR Code</h4>
 	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
 	<script type="text/javascript">
 		(function(b,r,a,n,c,h,_,s,d,k){if(!b[n]||!b[n]._q){for(;s<_.length;)c(h,_[s++]);d=r.createElement(a);d.async=1;d.src="https://cdn.branch.io/branch-latest.min.js";k=r.getElementsByTagName(a)[0];k.parentNode.insertBefore(d,k);b[n]=h}})(window,document,"script","branch",function(b,r){b[r]=function(){b._q.push([r,arguments])}},{_q:[],_v:1},"addListener banner closeBanner closeJourney data deepview deepviewCta first init link logout removeListener setBranchViewData setIdentity track trackCommerceEvent logEvent disableTracking getBrowserFingerprintId crossPlatformIds lastAttributedTouchData setAPIResponseCallback qrCode setRequestMetaData setDMAParamsForEEA setAPIUrl getAPIUrl".split(" "), 0);
+		branch.setAPIUrl("https://api.stage.branch.io");
 
 		branch.setAPIResponseCallback(function(url, method, requestBody, error, status, responseBody) {
 			console.log('Request: ' + method + ' ' + url + ' body=' + JSON.stringify(requestBody));

src/6_branch.js

@@ -1342,7 +1342,6 @@ Branch.prototype['qrCode'] = wrap(
 			utils.cleanLinkData(linkData),
 			function(error, rawBuffer) {
 				function QrCode() { }
-
 				if (!error) {
 					QrCode['rawBuffer'] = rawBuffer;
 					QrCode['base64'] = function() {