Added an acceptance test project

I want to be able to take a load of SMILES strings for actual molecules and test
that they parse into the correct molecule.

I've listed a load of SMILES strings as test input (separated by ones it should be
able to parse correctly now and those it doesn't handle yet). Eventually all of
these should become test cases for the TestSmiles test.

(It's going to take a bit of effort to create the expected values for some of the
large molecules but we'll see how it goes!)