Add WorldGuard...jar since it has unresolvable dependencies through maven

[ERROR] Failed to execute goal on project ShowCaseStandalone: Could not resolve dependencies for project com.kellerkindt:ShowCaseStandalone:jar:0.0.1-SNAPSHOT: Failed to collect dependencies at com.sk89q.worldguard:worldguard-legacy:jar:7.0.0-SNAPSHOT -> com.sk89q:commandbook:jar:2.3 -> org.bukkit:bukkit:jar:1.6.2-R0.1-SNAPSHOT: Failed to read artifact descriptor for org.bukkit:bukkit:jar:1.6.2-R0.1-SNAPSHOT: Could not transfer artifact org.bukkit:bukkit:pom:1.6.2-R0.1-SNAPSHOT from/to bukkit-repo (http://repo.bukkit.org/content/groups/public/): repo.bukkit.org: Unknown host repo.bukkit.org -> [Help 1]
1 job for master in 4 seconds (queued for 2 seconds)