Merge pull request #206 from peastman/master

Moved benchmarking script into main repository
Merge pull request #207 from peastman/master

Optimizations to CPU version of GBSA
Merge pull request #208 from peastman/master

Improved the geometry of hydroxyls when adding hydrogens
Merge pull request #211 from peastman/master

Fixed compilation errors on gcc
Merge pull request #212 from peastman/master

Tabulated log(x) to improve GB performance
Merge pull request #213 from peastman/master

Fixed compilation errors on OS X 10.9
Merge pull request #215 from peastman/master

Added some missing virtual destructors
Merge pull request #218 from peastman/master

Fixed errors on OS X 10.9: link against libc++ instead of libstdc++