mailru/FileAPI — pull request #68 by wingedfox (2013-02-12 12:53:06+00:00)
Title: Fix for #65

Added "Content-Type" header

Example of server-side response for preflight cors request
```java
response.setHeader("Access-Control-Allow-Origin", "*");
if ("options".equals(req.getMethod().toLowerCase())) {
response.addHeader("Access-Control-Request-Method", "POST");
response.addHeader("Access-Control-Allow-Headers", "Content-Range, X-Requested-With, Content-Disposition, Content-Type");

return null;
}
```