Right click on the "Direct Link" in the first post.
Click "Save Link As" (Firefox) or "Save Target As" (Internet Explorer)
Save the .zip file as "Event_emote.zip" to your Add-Ons folder - usually C:/Program Files/Blockland/Add-Ons
Start the game
In the Start Server part, and "Add-Ons" button/tab, find the new Add-On and enable it.
The Emote event should now be in your server.
Note that, in Internet Explorer, spaces in the file name are replaced with underscores: When saving new Add-Ons, the file name should have only one underscore, after the type/prefix like this:
Weapon_Gun.zip
Weapon_Horse Ray.zip
Projectile_Radio Wave.zip
Player_No Jet.zip