Fixed include file extension from '.h' to '.hpp' in OsalApi.hpp. Changed website references from 'www.cladlab.com' to 'www.mbedded.ninja', closes #7. Embedded 'OsalNs' namespace in 'MbeddedNinja' namespace, closes #8. Added file 'port/LinuxOsal.hpp', which contains a Linux-port of the operating system abstraction layer, closes #6. Made methods of Osal class equal to type pure virtual to force the port-specific versions to implement all required functions. Added mutex and binary semaphore objects with port-sepcific implementations for FreeRTOS, closes #5. Renamed module from 'Osal-Cpp' to 'OsalCpp', closes #4. Added more info about module and examples to README, closes #9.