Improve readme

Full changes coming soon...
Merge pull request #12 from stuntguy3000/patch-1

Improve readme
Make @ mentions work!
Merge pull request #13 from stuntguy3000/patch-2

Make @ mentions work!
Show holograms to everyone. Keep no-one out of the cool circle c:
Removed uneeded imports
Organized Imports
Added @Override
Removed manual array copying
Added Specific Expection catching
Removed redundant casting
Revert "Removed redundant casting"

This reverts commit 0e0802197047dac8b7742ddfb7bc140eb50c9272.
Unicode character shortcuts can now be specified for use in holograms
Added support for 1.6
Added important comment. o/
Refresh displays when a new hologram is created
Code optimisations
Smoother animations, edit and refresh commands and text animations

Text animations - Adds #10
I love merge conflicts...
Fix metadata packet ID