added cpython-usage to doc/
added cpython-usage to doc/

Explains considerations in using CPython for scripting.

pariahsoft/TsunagariC,pariahsoft/Tsunagari,pariahsoft/TsunagariC,pmer/TsunagariC,pmer/TsunagariC,pariahsoft/Tsunagari,pariahsoft/Tsunagari,pariahsoft/TsunagariC,pariahsoft/Tsunagari,pmer/TsunagariC