Update README.md

[Nonemoticoner]

I propose such solution for #70 No need to make it more complex. Let's keep it simple.

[hypesystem]

Great! Thanks for the PR. I have a few notes:

• If you are only adding a single data field, the shorter syntax would be message.addData("key1", "msg1");
• I would prefer to show off the Sender#send method, rather than Sender#sendNoRetry. All you need to do is change the method name -- it takes the same arguments.
• I really do think the section should appear before usage. It seems the primary source for confusion is stumbling upon code, trying to run it, and seeing it not work. Let's make it easy to try to run something.

[hypesystem]

Uh, and one small thing: we should try and be consistent with the code style. The other examples use this for error checking/logging:

if(err) console.error(err);
else    console.log(result);

You should probably use this to be consistent :)

[Nonemoticoner]

Done, as you pleased. I'm not that convinced to be so consistent. For me, it implies too much Ctrl+C > Ctrl+V bad practice but whatever. I believe you can merge it now.

[hypesystem]

Great! Remember to add yourself to the contributors list in package.json and in the README - then I'll merge :)

Just a note on the consistency of code style (that you comment on): the code people first see, using the library, will probably use the style that they will themselves adopt. I think it's significant what we show new users of the library. Does it have to be this particular convention? No. But showing them that we stick to a convention fosters a better mentality (and more readable code).

[Nonemoticoner]

Done, you can merge ;)

[hypesystem]

Sorry for the long wait - I got hit by the flu :(