Update or Fix AsciiParser::species_list()

[pbauman]

I guess we're supposed to provide just a file with a new species on each line? Since we still require the species_data, we could just parse the first column of that file. Downside is not leveraging default file Antioch has, but upside is one fewer text files the user needs to parse for the AsciiParser. My preference is the latter (especially after trying to lay all these parsing hooks into GRINS, it's nice to have just one file, ala Cantera/XML).

This is not high priority because really I just want to prefer XML, but ChemKin won't be hard to support either, but at least wanted to log it.