First implementation of a modified CF2008Swiss version
Removing PGV from table of coeff. since non supported in other coeff tables
Fixes a small bug - All tests passing
First fix to documentation
 Add .rst file
Fixes documentation issues
Fixes a minor typo
Merge pull request #247 from gem/CF2008nv

Modifications of the Cauzzi and Faccioli (2008) for the Swiss Hazard model