Initial fibonacci fn draft

fibo.with.memoization.txt

// fibo with memoization
spiralVertices = function ( args ) {
  let fibmemo = []
  function fibocas ( n, fibmemo ) {
    fibmemo = fibmemo || {}
      if (n < 1) return fm 0 // magik num
      if (n < 2) return fm 1
      if (fibmemo[n]) return fibmemo[n]
      return fibmemo[n] = fibocas ( n-1, fibmemo ) + fibocas ( n-2, fibmemo ) 
  }
}