Correction of year for D.Beazley's video

"Generators: The Final Frontier" was presented at pycon 2014
Merge pull request #16 from theanalyst/patch-1

Correction of year for D.Beazley's video
Removed Jesse Davis's What Is Async, How Does It Work, And When Should I Use It?

The talk is great ([A. Jesse Jiryu Davis: **What Is Async, How Does It Work, And When Should I Use It? - PyCon 2014**](https://www.youtube.com/watch?v=9WV7juNmyE8)) but it doesn't serve the current intention of this markdown file which is focusing pure/built-in Python videos.
Change format to add information such as slides, alternative url to the video, presentation, etc
Fixing spelling (ressources -> resources)
Merge pull request #17 from SylvainDe/master

Change format to add information such as slides, alternative url to the ...
#20 Added "Designing Poetic APIs" by Erik Rose
Add slides URL for Designing Poetic APIs by Erik Rose
Fixed link to youtube version of "API Design: Lessons Learned"
Merge pull request #24 from svetlyak40wt/patch-1

Fixed link to youtube version of "API Design: Lessons Learned"
Merge pull request #23 from SylvainDe/master

Add slides URL for Designing Poetic APIs by Erik Rose
Merge pull request #1 from s16h/master

try merge upstream to my fork