Create generic-yearly-gantt-chart-w-today.json

[hakki-max]

Q	A
Bug fix?	no
New sample?	yes
Related issues?	fixes #X, partially #Y, mentioned in #Z

What's in this Pull Request?

it's a new sample based on Tetsuya Kawahara (@techan_k) work added a bar at the bottom of gantt indicating today() date location. (refer to pic on the left)

This is the 1st time i am submitting thru Git... hopefully i am doing the right thing. ^__^ /

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