include version info in top comment, close #2276

Jakefile.js

@@ -12,7 +12,8 @@ To run the tests, run "jake test".
 For a custom build, open build/build.html in the browser and follow the instructions.
 */
 
-var build = require('./build/build.js');
+var build = require('./build/build.js'),
+    version = require('./src/Leaflet.js').version;
 
 function hint(msg, paths) {
 	return function () {
@@ -33,7 +34,14 @@ task('lintspec', {async: true}, hint('Checking for specs JS errors...', 'spec/sp
 
 desc('Combine and compress Leaflet source files');
 task('build', {async: true}, function (compsBase32, buildName) {
-	build.build(complete, compsBase32, buildName);
+	var v;
+
+	jake.exec('git log -1 --pretty=format:"%h"', {}, function () {
+		build.build(complete, v, compsBase32, buildName);
+
+	}).on('stdout', function (data) {
+		v = version + ' (' + data.toString() + ')';
+	})
 });
 
 desc('Run PhantomJS tests');

build/build.js

@@ -82,13 +82,13 @@ function bytesToKB(bytes) {
     return (bytes / 1024).toFixed(2) + ' KB';
 };
 
-exports.build = function (callback, compsBase32, buildName) {
+exports.build = function (callback, version, compsBase32, buildName) {
 
 	var files = getFiles(compsBase32);
 
 	console.log('Concatenating and compressing ' + files.length + ' files...');
 
-	var copy = fs.readFileSync('src/copyright.js', 'utf8'),
+	var copy = fs.readFileSync('src/copyright.js', 'utf8').replace('{VERSION}', version),
 	    intro = '(function (window, document, undefined) {',
 	    outro = '}(window, document));',
 	    newSrc = copy + intro + combineFiles(files) + outro,

src/copyright.js

@@ -1,5 +1,4 @@
 /*
- Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
- (c) 2010-2013, Vladimir Agafonkin
- (c) 2010-2011, CloudMade
+ Leaflet {VERSION}, a JS library for interactive maps. http://leafletjs.com
+ (c) 2010-2013 Vladimir Agafonkin, (c) 2010-2011 CloudMade
 */