Update README for partitions

Author: daviddelaat

README.md

@@ -19,7 +19,7 @@ This library provides the following functions:
  - `multinomial(k...)`: receives a tuple of `k_1, ..., k_n` and calculates the multinomial coefficient `(n k)`, where `n = sum(k)`; returns a `BigInt` only if given a `BigInt`;
  - `primorial(n)`: returns the product of all positive prime numbers <= n; always returns a `BigInt`;
  - `stirlings1(n, k)`: the signed `(n,k)`-th Stirling number of the first kind; returns a `BigInt` only if given a `BigInt`.
-
+ - `partitions(n)`: returns a `Vector{Int}` consisting of the partitions of the number `n`.
 
 Young diagrams
 --------------
@@ -30,4 +30,3 @@ Limited support for working with Young diagrams is provided.
 - `isrimhook(x)`: checks if skew diagram `x` is a rim hook
 - `leglength(x)`: computes leg length of rim hook `x`
 - `character(a, b)`: computes character the partition `b` in the `a`th irrep of Sn
-