Fix for building on Linux path error.
Fix for building on Linux path error.

Geocent/node-hmd,Sciumo/node-hmd,Geocent/node-hmd,Sciumo/node-hmd,putrinolab1/node-hmd,putrinolab1/node-hmd,putrinolab1/node-hmd,Sciumo/node-hmd,Geocent/node-hmd,putrinolab1/node-hmd,putrinolab1/node-hmd,Sciumo/node-hmd,Geocent/node-hmd,Geocent/node-hmd,Geocent/node-hmd,Sciumo/node-hmd