Update INSTALL.md
Update DHTservers
Merge pull request #695 from benwaffle/patch-2

Update INSTALL.md
Merge pull request #699 from stqism/patch-2

fix redundacies in DHT lists.
Fixed group chat doc.
Done with encryption and core adaptations.
In respect to freedom, i fixed terminology
Minor fix
Set last_noreplay to zero when friend goes offline.
Added build system
Fixed possible anonimity leak with the onion routing.
Improved support for Plan 9, older SunOS, and AIX.
Added more error checking
Made bootstrapping optional
Shortened daemon's name
Improved hole punching a bit.
Not my finest moment
Moved to networking.h

Plan 9 requires u.h in every file
Moved Unix support 

Networking.h is imported by everything.
That newline looks cleaner