message: docs(readme): add getOutgoers function, explain removeElements closes
diff: @@ -482,7 +482,7 @@ Returns true if element is a node
  ### removeElements
  -Returns elements without the elements from `elementsToRemove`
  +Returns an array of elements without the ones from `elementsToRemove`. It also removes all incoming/outgoing edges if you just pass one or multiple nodes
  `removeElements = (elementsToRemove: Elements, elements: Elements): Elements`
  @@ -492,6 +492,12 @@ Returns elements array with added edge
  `addEdge = (edgeParams: Edge, elements: Elements): Elements`
  +### getOutgoers
  +
  +Returns all direct child nodes of the passed node
  +
  +`getOutgoers = (node: Node, elements: Elements): Node[]`
  +
  You can use these function as seen in [this example](/example/src/Overview/index.js#L40-L41) or use your own ones.
  