Adding the first post: realtime data processing

NFLabs is going to have bi-lingual korean-english engineering blog at blog.nflabs.com and this is the first post.

@Leemoonsoo  did a Korean version, now we need a translation. 
Let's keep it in the same file for now.

**HOW TO contribute a translation:**
 - login to github.com (or create an account https://github.com/join)
 - start by gust clicking "Edit" in this file [_posts/techtalk/2014-02-20-realtime-processing-talk.md](https://github.com/NFLabs/tech-blog/blob/posts/first-techtalk/_posts/techtalk/2014-02-20-realtime-processing-talk.md)
 - you can use the [markdown syntax](http://guides.github.com/overviews/mastering-markdown/) and _"Preview"_ button to check how the result will look like
 - as far as you are done, fill-in the description of the changes you made under "commit changes" and click "Commit changes" at the end of the page

That's it, you should see them in list below now!