Build failing

[refrigerator]

Looks like the build is failing on Travis because of broken links: https://travis-ci.org/afonsopacifer/awesome-firebase/builds/466321660

Here are the errors:

1. [L064]  https://chatsdk.co SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed 
2. [L071] 404 http://bestoffirebase.com/  
3. [L136]  http://afonsopacifer.com/ getaddrinfo: Name or service not known 

I think the first can be fixed by linking to the http version instead of https. The URLs for the other 2 are just broken now, so I'd propose removing them from the list.

Wdyt?