Added gitignore and added retries for failed batch attempts

.gitignore

@@ -0,0 +1,3 @@
+# Created by .ignore support plugin (hsz.mobi)
+.idea
+node_modules

src/loggly.tracker.js

@@ -146,16 +146,51 @@
 
 
         },
-        track: function(data) {
+        track: function (data, attempts) {
             // inject session id
             data.sessionId = this.session_id;
 
+            var self = this;
+
+            //track number of attempts to publish
+            var attemptCounter = 0;
+            if(attempts) {
+                attemptCounter = attempts;
+            }
+
+            var postTimeout;
+
             try {
                 //creating an asynchronous XMLHttpRequest
                 var xmlHttp = new XMLHttpRequest();
                 xmlHttp.open('POST', this.inputUrl, true); //true for asynchronous request
                 xmlHttp.setRequestHeader('Content-Type', 'text/plain');
                 xmlHttp.send(JSON.stringify(data));
+                xmlHttp.onreadystatechange = function() {
+                    if(xmlHttp.readyState === 4 && xmlHttp.status === 0) {
+                        if(attemptCounter <= 12) {
+                            console.log("Failed to log to loggly because of a network condition.");
+                            console.log("Will attempt to log again in 5 seconds.");
+
+                            postTimeout = setTimeout(function() {
+                                self.track(data, attemptCounter + 1)
+                            }, 5000);
+                        } else {
+                            console.log("Loggly has attempted to log this data for the last minute and failed. Ceasing" +
+                                " attempts to log.");
+                            console.log("Failed log data:", data);
+
+                            clearTimeout(postTimeout);
+                        }
+                    } else if (xmlHttp.status === 200 || xmlHttp.status === 304) {
+                        // It will only run this if there was a previous failure
+                        if(postTimeout) {
+                            console.log("Successfully logged to loggly.");
+                            clearTimeout(postTimeout);
+                            attemptCounter = 0;
+                        }
+                    }
+                };
 
             } catch (ex) {
                 if (window && window.console && typeof window.console.log === 'function') {