added php build script for anki addon zip

build_anki.php

@@ -0,0 +1,45 @@
+<?php
+$zip = new ZipArchive();
+$filename = './dist/anki__hanzi_colorizer.zip';
+
+$rootPath = './hanzicolorizer';
+
+if (!is_dir('./dist')) {
+	mkdir('./dist');
+}
+
+if (is_file($filename)) {
+	unlink($filename);
+}
+
+if ($zip->open($filename, ZipArchive::CREATE)!==TRUE) {
+    exit("cannot open <$filename>\n");
+}
+
+$files = new RecursiveIteratorIterator(
+    new RecursiveDirectoryIterator($rootPath),
+    RecursiveIteratorIterator::LEAVES_ONLY
+);
+
+$zip->addFile('anki/hanzi_colorizer.py', 'hanzi_colorizer.py');
+foreach ($files as $name => $file)
+{
+    // Skip directories (they would be added automatically)
+    if (
+    	!$file->isDir()
+    	&& (
+    		(preg_match("@\.py$@", $file->getFileName()))
+    		|| (preg_match("@\.svg$@", $file->getFileName()) && preg_match("@" . preg_quote("data" . DIRECTORY_SEPARATOR . "hanzivg" . DIRECTORY_SEPARATOR . "hanzi") . "$@", dirname($file->getPathName())))
+    	)
+    )
+    {
+        // Get real and relative path for current file
+        $filePath = $file->getRealPath();
+        $relativePath = preg_replace("@^" . preg_quote('./') . "@", "" , $file->getPathName());
+
+        // Add current file to archive
+        $zip->addFile($filePath, $relativePath);
+    }
+}
+
+$zip->close();