Added debugging

Added methods for debugging breakpoints. Updated README.

README.md

@@ -40,6 +40,11 @@ Whenever the condition returns true, be it on page load or when the viewport cha
 	});
 ```
 
+## Debugging
+
+The plugin provides some basic debugging which you can activate by setting `$.breakpoint.debug = true`. This will cause the plugin to log information to the browser console whenever a breakpoint is entered or exited. Add a `toString` method to your breakpoint object to distinguish between breakpoints; otherwise you'll se `[object Object]` as the name of the breakpoint.
+
+
 ## Tips and tricks
 
 ### MatchMedia support in older browsers

js/jquery.breakpoint.js

@@ -39,6 +39,7 @@
 
 	function checkActiveBreakpoint(breakpoint) {
 		if (!breakpoint.condition()) {
+			debug('Exiting breakpoint: ' + breakpoint);
 
 			// We have left this breakpoint.
 			if (typeof breakpoint.exit === 'function') {
@@ -56,6 +57,8 @@
 
 			// We have entered this breakpoint.
 			if (typeof breakpoint.first_enter === 'function') {
+				debug('Entering breakpoint for the first time: ' + breakpoint);
+
 				try {
 					breakpoint.first_enter.apply(breakpoint);
 				} catch (e) {}
@@ -65,6 +68,7 @@
 			}
 
 			if (typeof breakpoint.enter === 'function') {
+				debug('Entering breakpoint: ' + breakpoint);
 				try {
 					breakpoint.enter.apply(breakpoint);
 				} catch (e) {}
@@ -106,4 +110,18 @@
 		});
 	}
 
+	/**
+	 * Breakpoint debugging
+	 */
+
+	// (De)activate breakpoint debugging.
+	$.breakpoint.debug = true;
+
+	// Console logging wrapper.
+	function debug () {
+		if ($.breakpoint.debug && console && console.info) {
+			console.info.apply(console, arguments);
+		}
+	}
+
 }(jQuery));