Obtaining blocks of memory

[pliniker]

Included:

• fully functional travis build of docs (thanks @CAD97 !)
• most of #9 with Windows allocation yet to do
• a short section on alignment
• a short section on the type of allocation in Rust terms

https://pliniker.github.io/book/master/index.html https://github.com/pliniker/book/blob/master/blockalloc/src/lib.rs