vdefault KARMA_PORT
vdefault KARMA_PORT

Allows BELHop's spec test suite to mimic multiple users. For example,
four concurrent users of the evidence spec:

    JST="specs/evidenceSpec.js"
    KARMA_PORT=9876 JASMINE_SPEC_TARGETS="$JST" ./scripts/karma-start.sh
    KARMA_PORT=9877 JASMINE_SPEC_TARGETS="$JST" ./scripts/karma-start.sh
    KARMA_PORT=9878 JASMINE_SPEC_TARGETS="$JST" ./scripts/karma-start.sh
    KARMA_PORT=9879 JASMINE_SPEC_TARGETS="$JST" ./scripts/karma-start.sh

OpenBEL/belhop,OpenBEL/belhop,OpenBEL/belhop