Add optional thresholds

[nalmadi]

The tool should take the three thresholds (phonological, orthographic, and semantic) as command-line arguments.

Something like this should do the trick:

Namesake test1.py 0.5 0.5 0.5

[mlanicaputo]

Cloned repository and created a branch to address this issue. Requesting permission to push a new branch & create a PR.