move update site to github

[Andrei-Pozolotin]

@oyse every time I have to enter your update site
http://dadacoalition.org/yedit

I am getting scared thatI will be hacked by a mob of angry Dadaists
https://en.wikipedia.org/wiki/Dada

can you please move the update site to a less scary place? :-)

[kwin]

Also this site seems to be down from time to time. Maybe you can rather use bintray which can be easily integrated in a Maven build (kwin/cppcheclipse#72).

[LorenzoBettini]

I was about to try Yedit and had the same problem: the update site seems to be down... please let me know if you need help in setting up the build and publishing that to bintray