include unistd.h to fix error with missing functions
use compiler variables instead of commands
Merge pull request #2 from benolee/include-unistd-in-import

include unistd.h to fix error with missing functions
Merge pull request #3 from benolee/use-compiler-variables-in-makefile

use compiler variables instead of commands
Force use of clang
Continue to flesh out IO and Cimple
Remove using d_namlen
Use CXX as the C++ compiler