Start writing /particle command

Using DarkBlade12's ParticleEffect Lib v1.5 for the /particle command
Start writing /particle command

Using DarkBlade12's ParticleEffect Lib v1.5 for the /particle command
Finally adding Command /particle
Update CommandParticle.java
Added Usage Message
Play sound when setting double slabs
Swap gold/iron to correct heavy/light relation
Merge pull request #60 from Jikoo/patch-2

Swap gold/iron to correct heavy/light relation
Merge pull request #57 from Jikoo/master

Change BlockBarrier from Block to BlockHalfTransparent
Merge pull request #54 from Wombosvideo/master

Particle Command
Move particlelib and actually register particle command
Fix entity generator
Merge pull request #59 from Jikoo/patch-1

Fixes red sandstone slab issues