Updated How To? (markdown)
Updated Tutorial: Indexing and Slicing (markdown)
added explanation of what's in xs, ys, zs, and zs'
Updated Tutorial: Scripting and Zoo System (markdown)
Updated Home (markdown)
Created How-To? (markdown)
Update library loading tips from issues#80
edit zoo tutorial
Merge branch 'master' of https://github.com/ryanrhymes/owl.wiki
add zoo tutorial
#2 changed Azimuth and Altitude
Updated Plot Gallery (markdown)