Added minification script

Makefile

@@ -129,6 +129,10 @@ doc-info: $(PATH_DOC_OUTPUT_INFO)
 doc-plain: $(PATH_DOC_OUTPUT_PLAIN)
 doc-html: $(PATH_DOC_OUTPUT_HTML)/index.html $(PATH_DOC_OUTPUT_HTML1)
 
+min: build/ease.min.js build/ease-full.min.js
+build/%.min.js: build/%.js
+	node $(PATH_TOOLS)/minify.js < $< > $@
+
 # clean up build dir
 clean:
 	rm -rf "${PATH_BUILD}"

tools/minify.js

@@ -0,0 +1,49 @@
+/**
+ * Minification script
+ *
+ * Takes input from stdin, mangles and minifies it, then outputs to stdout.
+ *   ex: $ node minify.js < source.js > source.min.js
+ */
+
+// uses UglifyJS
+var parser = require( 'uglify-js' ).parser,
+    uglify = require( 'uglify-js' ).uglify,
+
+    FILE_ROOT = '../build/'
+;
+
+// we should receive the file via stdin
+var data = '';
+process.stdin
+    .on( 'data', function( chunk )
+    {
+        data += chunk;
+    } )
+    .on( 'end', function()
+    {
+        minify();
+    } )
+;
+
+// stdin is paused by default, so we have to unpause it to read
+process.stdin.setEncoding( 'utf8' )
+process.stdin.resume()
+
+
+/**
+ * Minifies and outputs the code
+ *
+ * The process involves mangling the code and minifying it.
+ */
+function minify()
+{
+    var ast  = parser.parse( data );
+
+    // mange and minify
+    ast = uglify.ast_mangle( ast );
+    ast = uglify.ast_squeeze( ast );
+
+    // output final, compressed code
+    process.stdout.write( uglify.gen_code( ast ) );
+}
+