[fix] - more usefull hotpixel and some insights how to make it more usefull
[typos]
[feature] - etag for hotpixel
[feature] - hotpixel.png
[feature] - we do not pull HDD every time we serve a PNG of ONE PIXEL!
[typo]
Merge pull request #3 from vodolaz095/master

[fix] - more useful hotpixel