ImportData: Converts raw inputs into an LF class object
In bjhufstetler/LeapFrog: LeapFrog for TSP

Takes a distance, coordinate, and tour information and creates an LF class object.

ImportData(
  distances = NULL,
  coordinates = NULL,
  tour = NULL,
  optimal = NA,
  knownOpt = NA,
  latlon = FALSE
)

`distances`	A `n`x`n matrix` where first row is not column headers.
`coordinates`	A `n`x`2 or 3` data object where first row is not column headers. Not required, but node names may be included as the first column.
`tour`	An `integer vector` containing the order to visit each node in a solution.
`optimal`	A `numeric` containing the solution tour length.
`knownOpt`	A `numeric` containing the known optimal tour length.
`latlon`	A `boolean` TRUE if coordinates are latitudes and longitudes, 0 otherwise.