Update presentations.txt

Add a my presentation
Update README.md

The plural of `staff` is `staff`.
Merge pull request #2 from yoshiori/patch-1

Update presentations.txt
Merge pull request #3 from deardaniel/patch-1

Update README.md
Update presentations.txt
Merge pull request #4 from rejasupotaro/master

Update presentations.txt
Sort presentations by alphabetical order
Add a mirakui's presentation "Cookpad's deployment and auto scaling"
add my presentation

talked on 27 Mar 2014 at http://atnd.org/events/48075
Merge pull request #5 from kwappa/kwappa-github-nyan

add my presentation
Add a kani_b's presentation
Merge pull request #6 from kanny/add_my_slide

Add a kani_b's presentation
Sort presentations by alphabetical ord
Add con_mame presentation
Merge pull request #7 from conmame/patch-1

Add con_mame presentation
Add COOKPAD and test automation.
Merge pull request #8 from cookpad/cookpad_and_test_automation

Add COOKPAD and test automation.
add kwappa's presentation

* 2014-07-17 System Lightning Talks Bar Vol.2
 * "Failure Teaches Success"
Merge pull request #9 from kwappa/kwappa-system-lt-bar

add kwappa's presentation
add slide: AWS Summit 2014 Tokyo: Real-Time Analysis System Backed by Amazon Redshift