[IMP] Add module to map product taxes.

[jesusVMayor]

I used @albertofl module: #20

[StefanRijnhart]

Thanks. Can you follow up the comments from the original PR? Notably, apply a decorator with the replace argument and create a more useful description. Please also provide a README.rst instead of the description in openerp.py (see https://github.com/OCA/maintainer-tools/blob/master/template/module/README.rst).