Bukkit Dev Page: http://dev.bukkit.org/bukkit-plugins/holographic-displays
API tutorial: https://github.com/filoghost/HolographicDisplays/wiki
Development Builds: https://ci.codemc.io/job/filoghost/job/HolographicDisplays
To use PlaceholderAPI, it is required to be using ProtocolLib as well. Once you have both PlaceholderAPI & ProtocolLib, PAPI placeholders will work out of the box!
<repository>
<id>codemc-repo</id>
<url>https://repo.codemc.io/repository/maven-public/</url>
</repository>
<dependency>
<groupId>com.gmail.filoghost.holographicdisplays</groupId>
<artifactId>holographicdisplays-api</artifactId>
<version>2.4.0</version>
<scope>provided</scope>
</dependency>
Holographic Displays is free software/open source, and is distributed under the GPL 3.0 License. It contains third-party code, see the included THIRD-PARTY.txt file for the license information on third-party code.