Ensured all page offsets are integers (fixes snowplow#291)

Author: fblundun

CHANGELOG

@@ -1,6 +1,6 @@
 Version 2.2.0 (2014-11-xx)
 --------------------------
-Ensured all page offsets are integers (#291) (TODO)
+Ensured all page offsets are integers (#291)
 Added public method to get duid (#289) (TODO)
 Added public method to get user fingerprint (#288) (TODO)
 Added bundle.js to deploy/.gitignore (#281)

src/js/tracker.js

@@ -650,7 +650,7 @@
 		function logPagePing(pageTitle, context) {
 			resetMaxScrolls();
 			core.trackPagePing(purify(configCustomUrl || locationHrefAlias), pageTitle, purify(configReferrerUrl),
-				minXOffset, maxXOffset, minYOffset, maxYOffset, context);
+				Math.round(minXOffset), Math.round(maxXOffset), Math.round(minYOffset), Math.round(maxYOffset), context);
 		}
 
 		/**