Optimised the LensDistortOp by cacheing the distortion and doing a simple look-up from within the warp() method instead of recomputing it per channel.
Removed all conditional statements from the tight loops.
Update README.asciidoc

repointing to github wiki
Small tweak to allow scons to build on darwin.
Merge pull request #2 from danbethell/macMayaBuildFix

Small tweak to allow scons to build on darwin.
Update README.asciidoc

repointing to pdfs in gh wiki
Reflect api changes in Alembic_1.1.2+
Merge pull request #1 from goddardl/LensDistortOp

Optimized the LensDistortOp, improving the performace 4x
Merge pull request #3 from danbethell/alembicApiChanges

Reflect api changes in Alembic_1.1.2+
Added *.o and *.pyc to .gitignore
Merge branch 'master' of https://github.com/ImageEngine/cortex