Unharmful Compile Errors on OSX

[janez87]

On OSX 10.10.x and with node v6.3.0 these errors may occur during the installation of TripleWave:

• While installing the dependency node-icu-charset-detector you could see ../node-icu-charset-detector.cpp:5:10: fatal error: 'unicode/ucsdet.h' file not found (tested on OSX 10.10), see here
• While installing the dependency node-iconv you could see ../node_modules/nan/nan.h:601:20: error: no type named 'GCPrologueCallback' in 'v8::Isolate'(tested on 10.10), please ignore..

Both errors do NOT block the installation of TripleWave and do NOT impact the execution in any way.

Probably we need to clean up the depedencies.