Updated the MongoHub to compile against OS X 10.11

[hegsie]

[ssteinerx]

Doesn't this change the minimum version requirement to 10.11? That's not a good idea at all; there are lots and lots of developer's machines still running 10.8, 10.9, and 10.10 including three of mine.

[hegsie]

Possibly, I'm fairly fresh to OSX coding, I created this to solve some issues I was seeing on 10.11 with MongoHub, thought at worst case someone who knew what they were doing could tinker with it to correct anything they didn't like to get the official version actually working properly with 10.11.

[exactreal]

Are you sure you can compile your version in os 10.11? I am failed....