Correct link to Travis CI build badge.
Correct link to Travis CI build badge.

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