distribute rule error

[shiffman]

The "More Number Properties with Vectors" insert at the end of section 1.4 ("More Vector Math") contains an error. It says:

"The distributive rule with 2 scalars, 1 vector: (n * m) * v = n * v + m * v"

It should say:

"The distributive rule with 2 scalars, 1 vector: (n + m) * v = n * v + m * v"

Note the first asterisk was changed to a plus sign.

[shiffman]

this issue is now tracked here: nature-of-code/noc-book#18