imports capitalization is causing errors in karma tests

[Marcin Paciulan]

in the main file you have var genericMeasure = require('./lib/GenericMeasure');
but file names are starting from small letters
it works fine in browser but when used in karma tests (probably shouldn't do it) it fails with 404 error

[Marcin Paciulan]

created a pull request #19

[Alexander Thor]

Awesome, thanks. PR merged.