So people can follow the 'unit tests' instructions, we need
to make sure PATH includes the karma bin directory otherwise
we see the following:
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aclouter@stevemcqueen:/usr/src/aten-ikvm/noVNC$ npm test

> noVNC@0.5.0 test /usr/src/aten-ikvm/noVNC
> karma start karma.conf.js

sh: 1: karma: not found
npm ERR! Test failed.  See above for more details.
npm ERR! not ok code 0
----