Merge pull request #17 from jrk/master

Fix stats.py output type
halide: Clean up interpolate example
Comment halidetuner.py
halide: Automatically allocate output buffer

This automatically handles splits on output dimension not evenly
divisible by requested buffer size.
halide: Simplified interpolate examples

Stripped down to allow easier debugging.
Merge branch 'master' of https://github.com/jansel/opentuner