Add check for mongo 2.4 before accessing btree values.
Add ioStats check.
Bump version to 1.6.0.0 for testing.
Better float maths to check for NaN
Default SQL to off in development config file
Bump version to 1.6.0.2 for testing
Bump version to 1.6.0.5 for release.
Merge pull request #26 from serverdensity/develop

Release 1.6.0.5