Updated plugin.yml to use maven version

Author: ConnorLinfoot

src/main/resources/plugin.yml

@@ -1,4 +1,4 @@
 name: TitleAPI
 description: TitleAPI allows you to use the new 1.8 titles on Spigot 1.8+
 main: com.connorlinfoot.titleapi.TitleAPI
-version: 1.6
+version: ${project.version}