Merge pull request #23 from teebrz/master

Added binary read/write functions to lib/stdio, update readme, etc
- Added load/store i8/i16 IIR instructions
- Fixed quirk in AST-to-IR wrt IIR instructions with no output
- Fixed geoMean handling of zero values in benchmark.py
- Progress on type prop
- Type propagation analysis almost complete
- Added methods to the CSV library
- Fixed bugs in CSV read/write methods
Update README.md

- Added documentation for the CSV library
- Completed initial type prop analysis
- Fixed minor bug with inlining
- Implemented simple image lib with TGA output support
Merge branch 'master' of github.com:maximecb/Higgs
- Progress on type prop analysis
- Added --jit_typeprop command-line option
- Progress on type prop analysis
- Began testing and integrating type prop into JIT
- Found and fixed bugs in type prop
- Enabled use of type prop information in IsTypeOp
Added stdlib.js, more read/write functions, etc