reCAPTCHA = {
    settings: {},
    config: function(settings) {
        return _.extend(this.settings, settings);
    }
}

Template.reCAPTCHA.helpers({
    sitekey: function() {
        return reCAPTCHA.settings.publickey;
    }
});

Template.reCAPTCHA.created = function () {
    $.getScript('https://www.google.com/recaptcha/api.js');
}

@@ -267,24 +267,171 @@
 nction () %7B%0A
+    if ('hl' in reCAPTCHA.settings) %7B%0A        $.getScript('https://www.google.com/recaptcha/api.js?hl=' + reCAPTCHA.settings.hl);%0A    %7D else %7B%0A    
     $.getScr
@@ -478,10 +478,16 @@
 i.js');%0A
+    %7D%0A
 %7D%0A

Support hl parameter