Hello guys, I think our announcement page needs to be "refreshed"

I wrote a new announcement page (see below) : what do you think of it ??

@Conan : if you like it, just copy/paste the whole text from this file :  New Page 1 Text



Changenote :
- cleaner look
- new funny roadmap
- no more ugly citations
- removed Coinsmarkets link as it is down
- added link to Discord / Twitter pages on the top
- added link to mining tutorials