Merge pull request #95 from ampayne2/master

Added cooldowns, changed cast() to boolean, changed how some stuff works and fixed a couple errors
Automated command usage message and cleaned up commands.
Merge branch 'master' of
https://github.com/kezz101/HarryPotterSpells.git

Conflicts:
	src/com/lavacraftserver/HarryPotterSpells/Commands/TeachAll.java
	src/com/lavacraftserver/HarryPotterSpells/Commands/Unteach.java
Removed '/teach *' and '/unteach *' spam
Added and implemented new SpellEvents
Merged and accepted Pull Request #96 from @colony88
added @zachoooo and @MrBluebear3 to the contributor list
Standardized config key naming (i.e. debug-mode rather than DebugMode)
Updated code to work with new config key names.
Added configurable upwards knockback to Stupefy
Added configurable damage to Stupefy.
Added default values to multiple spells (in case there isn't a config
entry)
Removed 't' on wingardium-leviosa.duration
Fixed SpellTargeter, updated Incendio to use the SpellTargeter and
modified README
Merge branch 'master' of https://github.com/kezz101/HarryPotterSpells.git
Fixed Incendio configuration