Got the answer HERE for windows, it says there that:
curl -XPUT 'http://localhost:9200/api/twittervnext/tweet'
Woops, first try and already an error:
curl: (1) Protocol 'http not supported or disabled in libcurl
The reason for this error is kind of stupid, Windows doesn’t like it when you are using single quotes for commands. So the correct command is:
curl –XPUT "http://localhost:9200/api/twittervnext/tweet"