Supports encoding and decoding of java-encoded base64 safe url characters

[det101]

Supports encoding and decoding of java-encoded base64 safe url characters
org.apache.commons.codec.binary.Base64.encodeBase64URLSafeString
example javaer output key='u-rXsDG_aegAnzC_CJt27plLGNqOfR****5o2ro1NOI';

[det101]

        var message = "https://github.com/";
        var key = "u-rXsMB_aegAnzC_CJt27plLGNqOfR2EHI5o2ro1NOI";
        var baseKey = CryptoJS.enc.Base64.parse(key, true);
        console.log("key："+baseKey.toString());
        var hash = CryptoJS.HmacSHA256(message, baseKey);
        var hashInBase64 = CryptoJS.enc.Base64.stringify(hash);
         console.log("result", hashInBase64);
        var shashInBase64 = CryptoJS.enc.Base64.stringify(hash, true);
        console.log("safe result："+hash.toString())
        document.write(shashInBase64);

issue #252
fixed #252