Switched EES wrapper over to use InnoSetup installer rather than annoying Visual Studio MSI builder. EES doesn't use the DLL anymore - can debug the DLF directly, instructions added to README.rst

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added updated coolpropsi.LIB with parameter checking and added to InnoSetup script

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/ibell/coolprop