Add "mpsfile" parameter to help text and fix remove command

[pooranis]

Hello! MinPath.py has facility to accept -mps mpsfile command line option, so I've included it in the help text. Additionally, all code in the script uses the mpsfile variable except at the very end, when the temporary mps file is removed - it is hardcoded as test.mps, so I've changed it to use the variable. I find this option helpful, as I often run MinPath in parallel on different sample annotations in a dataset, and specifying a unique per-sample temp filename helps avoid overwriting, etc. Hopefully, you can accept or modify these changes.

Thanks for your very useful tool!

[khemlalnirmalkar]

Hi, please can you help with this error, got using MinPath

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now write mps file..
End of PrintMPS
now run command = /scratch/knirmalk/dbs/geneQuantDBs/MinPath/glpk-4.6/examples/glpsol test.mps -o test.mps.LPout
open file test.mps.LPout error

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Thanks