vecInsert.m

Works with 1xn and nx1 vectors.

Inserts a vector of elements into the given positions. elemToInsert is a
vector that can be as small as 1 element and as large as desired.
Position is an array of positions that can be as small as one element and
as large as the number of elements you wish to insert.

If position is smaller than the number of elements, this function will
assume that the remaining elements will be inserted sequentially.

If position is larger than the number of elements, this function will insert the
last element of elemToInsert at the remaining given positions.