Declared file system interface
Added empty sketch
Updated documentation

Fixed typographical error in documentation
Included mthread.h
Declared system thread
Merge branch 'develop' of https://github.com/osvein/OS into develop
Defined sketch setup
Merge branch 'develop' of https://github.com/osvein/OS into develop
Declared FHS implementation
Corrected const-ness
Fixed preprocessor expression
Declared device file system
Fixed preprocessor includes
Changed to Arduino boolean data type
Added missing semicolons after class definitions
Updated file open declaration
Documented file open
Fixed adding OS to thread list

Point to OS object