Created /warpto command

See https://github.com/NerdNu/NerdBugs/issues/55
Created /furnace-top, /furnace Aliases

Addresses [NerdBug 46](http://github.com/NerdNu/NerdBugs/issues/46); furnace alerts on creative are unnecessary.
Created /delhome command

Having too many homes on C was getting quite annoying.
Merge pull request #4 from Dumbo52/master

Created /warpto, /furnace-top, /delhome Commands
Fixed minor bug in /warpto

Confirmation message in /warpto fixed.
Fixed /furnace-top
Minor change

It's not uncommon that I make mistakes like this (though it seemed to work anyway).
Merge pull request #5 from Dumbo52/master

Fixed /furnace-top, tweaked /warpto
Minor change

It's not uncommon that I make mistakes like this (though it seemed to work anyway).