work on writeBlock()
Merge branch 'master' of github.com:luke-plewa/TinyFS
writeBlock() writes to file, making it work with disks now
Merge branch 'master' of github.com:luke-plewa/TinyFS
added file error macros
Merge branch 'master' of github.com:luke-plewa/TinyFS
readBlock() and writeBlock() should be working