test of randNum(), createLineColorChartInfo(), getHashSize()

Add sample test code with phantomjs and Qunit.
I don't include these test framework code, becase these software is independent of linkdraw.
So I append to making symlink before running test code for Debian system.

Best regards, 

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>