made erlang binding work with system *installed* dyncall: - made build use static libraries (used .o files directly) - removed custom flags for include path and relying on CFLAGS now - change cc to $(CC) - readme update with build instructions, etc.

#!/bin/sh
gcc -I../../../dyncall/dyncall shdc.c ../../../dyncall/dyncall/libdyncall_s.a ../../../dyncall/dynload/libdynload_s.a -o ./shdc