Merge pull request #6 from openworm/Membranes

Merge Membrane and master branches
Merge pull request #9 from openworm/electrophysiology

Electrophysiology
small documentation improvements
small documentation improvements
updated readme
buffers folder added and some more debugging in main.cpp
Merge branch 'master' of https://github.com/openworm/Smoothed-Particle-Hydrodynamics
sphFluid.cl performance boosts by @Neurophile.
Fixes #152
Merge branch 'master' into electrophysiology
several improvements to sphFluid.cl to allow running on AMD OpenCL
changed sphFluid.cl to make it work with AMD, required a bugFix
Merge branch 'electrophysiology' of https://github.com/openworm/Smoothed-Particle-Hydrodynamics into electrophysiology
Merge branch 'master' into electrophysiology
removed header file which unfortunately needs to be inside cl code itself to run on AMD and probably NVIDIA