bare bones for distributions
added normal distribution
merged with develop
added argument check
added pickRandom
added randomMatrix function
Merge pull request #40 from sebpiq/random

Basic random functions + uniform and normal distribution
Removed method util.forEach
Updated readme and history
Fixed #44: allow multiple unary minus operators after each other
merged randomMatrix to random
merged with develop
Merge pull request #47 from sebpiq/random

Merged randomMatrix and random
Refactored all code to 2 space indentation
Replaced all `x instanceof Array` with `Array.isArray(x)`
Moved the library builds math.js and math.min.js to subfolder `dist`
Renamed all test files to *.test.js
refactored random, randomInt more tests
random and randomInt more flexible args
Changed all source files into node.js modules