TENATIVE -> TENTATIVE

close #45

lib/event.js

@@ -18,7 +18,7 @@ var ICalEvent = function(_data, calendar) {
 
     vars = {
         allowedRepeatingFreq: ['SECONDLY', 'MINUTELY', 'HOURLY', 'DAILY', 'WEEKLY', 'MONTHLY', 'YEARLY'],
-        allowedStatuses: ['CONFIRMED', 'TENATIVE', 'CANCELLED']
+        allowedStatuses: ['CONFIRMED', 'TENTATIVE', 'CANCELLED']
     };
 
     data = {
@@ -615,6 +615,10 @@ var ICalEvent = function(_data, calendar) {
             return this;
         }
 
+        // https://github.com/sebbo2002/ical-generator/issues/45
+        if(status === 'TENATIVE') {
+            status = 'TENTATIVE';
+        }
         if(vars.allowedStatuses.indexOf(status.toUpperCase()) === -1) {
             throw '`status` must be one of the following: ' + vars.allowedStatuses.join(', ') + '!';
         }