Updated .git files
Updated documentation
Removed 1.0 sources
Added 1.1 sources

- Pkcs11Interop has been updated to version 2.0
- iTextSharp has been updated to version 5.5
- Uses NuGet to manage external references
- Uses widely supported CKM_RSA_PKCS mechanism instead of
CKM_SHA*_RSA_PKCS
- Pkcs11Signature class has been renamed to Pkcs11RsaSignature
- More detailed description of the code samples
- Other minor bug fixes