Update build.gradles for ides
Remove the requirement of / for files
Add Bukkit adapter for Spigot 1.8R1.
[Bukkit] Fix missing configuration file.
Update the changelog.
Merge pull request #310 from kenzierocks/feature/multi-project-ide

Add support for IDEs in the Gradle build files.
Update internal block data for 1.8, without updates to block bag data.
Update changelog to include MC 1.8 updates.
Release 6.0.
Bump to v6.0.1-SNAPSHOT.