Distributions

I'll gradually be adding new Distributions but so far I have added the basic ones. Those include continuous and discrete ones.

All of them will be accessible in the StatsLib.Distributions.Continuous or StatsLib.Distributions.Discrete namespace.

Continuous

1. Chi Squared
2. Exponential
3. Gamma
4. Normal
5. Uniform

Discrete

1. Binomial
2. Geometric
3. Negative Binomial
4. Poisson