Added wrapper code for Julia module; See #304

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added docs for usage of Julia and CoolProp

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Updated buildbot to copy Julia files to output

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' into Julia
Merge pull request #361 from CoolProp/Julia

Julia wrapper prepared