structure galore

Adds 4 new items! 1 Air capture bottle, Lets you capture... 2 Bottle of air, You obtain this by right clicking on the air capture bottle. The air bottle will be put in your off hand but if there is somthing already in you off hand it will delete it and replace it with the air bottle 3 Block of air, you surround a pair of diamond boots with blocks of air you get the... 4 Air boots, you can now walk in the sky and not fall! crouch to go down and jump to go up!