Remove hint on beacon.js as it's apparently a bad name

A few days ago I noticed some weird behaviour in the beacon.js
repository. I wasn't able to view repository statistics, merge pull
requests and some other minor bugs. That was especially strange because
I created two repositories (beacon and beacon.js) that I used exactly
the same way. So I contacted the support and stated that there are some
strange things going on in this repository.

And as always with technical issues: "Hm, that's not reproducible on our
side". I tried with different browsers etc, still problems. After some
back and forth I figured out that the only similarity was that an
adblocker is installed (never thought of this being a problem).
Apparently the EasyPrivacy blocklist has an entry for URLs that contain
"/beacon.js" and therefore blocked some internal requests on GitHub from
loading additional information.

So the moral of this commit message is: Yes, objectively bad names
exist. Think about your naming, and don't forget your adblocker.
Unflexible blocklists may block a few more things as they are supposed
to.

Fortunately I thought about merging these both repositories before. So
beacon.js is now gone, everything will take place in this repository
from now on.

Thanks @vbrandl for helping me to resolve this :)

README.md

@@ -5,8 +5,7 @@ track https://blog.ntzwrk.org/tags/beacon/._
 
 ---
 Beacon is a transparent and secure voting software powered by Blockstack's software stack. It lets you issue votes into
-a blockchain and other users vote on that. It's based on the corresponding library
-[beacon.js](https://github.com/ntzwrk/beacon.js).
+a blockchain and other users vote on that.
 
 Because of Blockstack's properties the app works completely decentralized without having to trust anyone. Beacon uses
 decentral naming, identity and storage as provided by [blockstack.js](https://github.com/blockstack/blockstack.js).